Used Charmilles Roboform 35 P Roboter Automat Die-Sinking Edm for sale (65,109)

Condition: excellent (used), Year of construction: 2003, functionality: fully functional, travel distance X-axis: 500 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 500 mm, overall weight: 3,600 kg, EDM MACHINE AGIE CHARMILLES AGIETRON IMPACT 3 WITH C AXIS TRAVEL X AXIS: 500 mm TRAVEL Y AXIS: 350 mm Dwsdpfx Aoy Rd Imjkmsc TRAVEL Z AXIS: 500 mm TRAVEL C AXIS: 360° TABLE SIZE: 800 x 600 mm TANK DIMENSIONS: 1100 x 730 x 400 mm ELECTRODE CHANGER: 28 POSITIONS ACCESSORIES: EROWA SYSTEM

Condition: used, Year of construction: 1999, For sale: a well-maintained, used Ingersoll Gantry 500. Travel ranges and working area: X-axis travel: 525 mm Y-axis travel: 400 mm Z-axis travel: 375 mm Working tank (W x D x H): 750 mm x 650 mm x 420 mm (lowerable lifting tank) Table and capacities: Work table (width x depth): 730 mm x 630 mm Max. table load: 1,000 kg Technology and equipment: Control system: Mitsubishi – 32-bit CNC Generator: 70 Ampere Multipulse Generator C-axis: Integrated, fully functional NC rotary axis in the head Safety: Integrated CO₂ fire extinguishing system and cartridge filter system Space requirements and transport data: Footprint/dimensions (W x D x H): approx. 2,100 mm to 2,450 mm x 1,750 mm x 2,600 mm Djdpfx Aoz D Agcekmswc Machine weight: approx. 4,800 kg (without filter system and peripherals)

Condition: excellent (used), Year of construction: 2024, operating hours: 1,200 h, functionality: fully functional, Offered: Sinker EDM machine genius750NOVA + connection Chameleon Linear - 120 electrode positions - 6 pallet positions 400x400 Sinker EDM machine genius 750 NOVA Right-hand configuration Control panel on the right, automation possible from the left side! * Travel ranges X * Y * Z: 420mm * 420mm * 400mm * Work table: 600mm * 600mm * Work table T-slots: number / width / spacing: 6 slots / 10mm / 83/100/100/100/83 * Controlled C-axis with n = 45 1/min * High retraction speed due to acceleration Dodpfezzawpox Akmjwc of 10 m/s² in Z and 20 m/min travel speed Generator * genius IPMtec, with comprehensive technology package for graphite, copper, and tungsten copper for machining all materials commonly used in tool and mold making * max. working current 52A, optional 100A or 196A (with 96A booster) Control system * Internal control computer with 1.2 GHz RISC CPU, 64-bit * Industrial PC with user interface, based on Win 10 * 22“ touchscreen, keyboard, mouse and handheld unit for setup with joystick, handwheel and touch display * Connections: LAN, USB, RS-232 Connection values * Electrical: 6 kVA, 400V, 50Hz * Pneumatic: 6 bar, 10 l/min * Required cooling capacity: 4.5 kW for cooling of dielectric fluid and control cabinet Chameleon base unit consisting of: * Robot * ZK’s own robot controller * 1 guide rail * 1 base magazine without magazine levels with rack and pinion drive Chameleon expansion magazine including base plate and glass sliding door set (magazine positions not included)

Condition: excellent (used), Year of construction: 2002, Technical specifications: Travel distances (X/Y/Z): 450 / 350 / 350 mm CNC control: MAKINO MGF2 Dwsdpezmabxefx Akmoc Tool changer Dimensions (length x width x height): approx. 2000 x 1950 x 3050 mm Machine weight: approx. 1.5 tons Condition: very good condition The seller is not liable for typographical or data transmission errors. The machine’s appearance, technical condition, and wear are commensurate with its age; used machines are sold without any warranty.

Condition: good (used), Year of construction: 2005, operating hours: 25,000 h, functionality: fully functional, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 315 mm, workpiece weight (max.): 500 kg, workpiece length (max.): 576 mm, workpiece width (max.): 400 mm, table load: 500 kg, Equipment: documentation/manual, We are offering this well-maintained Zimmer+Kreim 600 wire EDM machine, manufactured by Zimmer&Kreim in 2005, for sale. Dwedozufdzopfx Akmsc Manufacturer: Zimmer+Kreim Model: 600 Year of manufacture: 2005 Condition: good Category ID: 1901 Type ID: 1429 Machine type: Wire EDM machine Zimmer&Kreim If you have any questions or require further information, please do not hesitate to send us a message or call us.

Condition: ready for operation (used), functionality: limited functionality, machine/vehicle number: 009, travel distance X-axis: 420 mm, travel distance Y-axis: 320 mm, travel distance Z-axis: 350 mm, Tool changer; Dwedpfx Akor Iid Ejmoc Tank - 900x600 mm Stroke - 420x320x350 mm

Condition: excellent (used), Year of construction: 2011, operating hours: 26,882 h, functionality: fully functional, travel distance X-axis: 310 mm, travel distance Y-axis: 270 mm, travel distance Z-axis: 270 mm, Exeron S 310 MF Year of manufacture: 2011 Generator hours: 26882 Control system: Exowin 20 X, Y, Z travel: 310 x 270 x 270 mm C-axis 3R tool holder in the spindle Erowa chuck on the machine table with magnetic plate Generator: 64 A C-box for carbide and PKD tools Dwsdpfxjzguk Ue Akmoc 20-position tool changer Fire extinguishing system Chiller Aluminum clamping plate, Erowa Documentation Machine is connected and available for inspection.

Condition: used, Year of construction: 2020, operating hours: 4,800 h, functionality: fully functional, travel distance X-axis: 905 mm, travel distance Y-axis: 705 mm, travel distance Z-axis: 450 mm, workpiece weight (max.): 3,000 kg, total height: 3,400 mm, total width: 2,100 mm, total length: 3,425 mm, table width: 850 mm, quill stroke: 710 mm, type of input current: three-phase, distance table to quill: 250 mm, table length: 1,150 mm, warranty duration: 6 months, feed rate X-axis: 5 m/min, feed rate Y-axis: 5 m/min, feed rate Z-axis: 15 m/min, input voltage: 400 V, overall weight: 7,500 kg, year of last overhaul: 2026, table load: 3,000 kg, input frequency: 50 Hz, rapid traverse X-axis: 5 m/min, rapid traverse Y-axis: 5 m/min, rapid traverse Z-axis: 15 m/min, Equipment: documentation/manual, EDM314MF30 + AWEX50/5 MF30 control panel Year of manufacture: 2020 Operating hours: 4800 h Overhauled Travel ranges XxYxZ: 905/1020 x 705 x 455 mm Work table: 1150 x 850 mm (steel table with T-slots) Work tank: 1200 x 900 mm Filling level of work tank: 500 mm Electrode weight, max.: 50/500 kg Dwjdpfx Aksyt Ewgemoc Workpiece weight: 3000 kg Machine weight: 7500 kg Machine dimensions (W x D x H): 2100 x 3425 x 3450 mm Equipment: Color: Light/Teal gray Tool changer: 30-position, in-machine Automation: AWEX50/5 50 electrode positions 5 pallets UPC 320x320 Cartridge filter system Quick-change chuck EROWA/3R-Macro C-axis: 100 rpm, direct measurement 0.0001 degrees Holding brake in C-axis CO2 extinguishing system K&B Fire protection flap Smoke extraction with activated carbon filter Cooling unit integrated in the machine Manual control panel Automatic tank refill Erosion generator: 60 A Option with booster stage for 120 A erosion power Transportation On-site commissioning Training

Year of construction: 2002, condition: not inspected (used), Robot no control panel + connection cables Dwjdpfx Aogu U Itokmec Used, untested robot. No technical documentation available. Not tested.

Condition: ready for operation (used), Year of construction: 1994, functionality: fully functional, travel distance X-axis: 565 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 415 mm, workpiece weight (max.): 1,000 kg, table width: 600 mm, TECHNICAL DETAILS Working Head Travel range X-axis: 565 mm Travel range Y-axis: 400 mm Travel range Z-axis: 415 mm Resolution X, Y, and Z axis: 0.001 mm Dsdpfxjzqct Sj Akmjwc Resolution C axis: 0.001° Rapid traverse speed: 800 mm/min Electrode weight without rotation max.: 100 kg Electrode weight with rotation max.: 15 kg Work Table Table length: 840 mm Table width: 600 mm Dielectric fluid level above table: 360 mm Workpiece weight max.: 1,000 kg Number of T-slots: 4 T-slot width: 10 mm Distance table – quill without chuck: 180–595 mm Distance table – quill optional: 245–660 mm Dielectric Fluid Supply Capacity: 400 l Number of paper filter cartridges: 4 MACHINE DETAILS Control: CNC Generator Rated current: 60–120 A Connected load: 15–23 kVA Dimensions & Weight Machine dimensions (L x W x H): 2,760 mm × 1,110 mm × 1,840 mm Machine weight: approx. 2,750 kg Generator dimensions (L x W x H): 1,800 mm × 600 mm × 920 mm Generator weight: 300 kg EQUIPMENT Controlled C-axis 16-position tool changer

Condition: used, Year of construction: 2014, operating hours: 21,476 h, functionality: fully functional, travel distance X-axis: 750 mm, travel distance Y-axis: 500 mm, travel distance Z-axis: 510 mm, feed length X-axis: 750 mm, feed length Y-axis: 500 mm, feed length Z-axis: 510 mm, We offer this used AGIE Charmilles CUT 400 SP wire erosion machine, manufactured in 2014. Type: CUT 400 SP Serial number: 001.018 Year of manufacture: 2014 Technical data: Travel ranges (X/Y/Z): 750 x 500 x 510 mm High-precision machining with excellent surface quality Automatic wire threading system (AWT) Modern CNC control with intuitive operation Stable machine construction for maximum accuracy Year of manufacture: 2014 Condition & Equipment: Regularly maintained Fully functional and ready for use Inspection and test run possible upon agreement Djdpfoz A R H Uox Akmjwc Special features: Due to the large travel ranges, the machine is particularly suitable for larger workpieces and versatile applications in single-piece and series production. If you have any questions or require further information, please do not hesitate to send us a message or call us.

Condition: ready for operation (used), Year of construction: 1995, functionality: fully functional, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 350 mm, workpiece weight (max.): 400 kg, controller model: AGIEMATIC T, No minimum price – guaranteed sale to the highest bidder! Dwsdpfx Akezpypnemjc TECHNICAL DETAILS Travel in X-axis: 350 mm Travel in Y-axis: 250 mm Travel in Z-axis: 350 mm Rapid traverse: approx. 720 mm/min Axes: 4 (X, Y, Z, C) Working area Table size: 600 × 450 mm Workpiece dimensions max.: approx. 860 × 620 × 350 mm Workpiece weight max.: 400 kg Electrode weight max.: 100 kg Working tank (internal): approx. 830 × 590 × 350 mm Distance from table to quill: 170 – 520 mm MACHINE DETAILS Control system: AGIEMATIC T Generator: AGIEPULS 60 Power connection: 400 V / 50 Hz Dimensions & weight Dimensions (L x W x H): approx. 3,000 × 1,700 × 2,580 mm Machine weight: approx. 2,550 kg

Condition: refurbished (used), Year of construction: 2008, functionality: fully functional, travel distance X-axis: 400 mm, travel distance Y-axis: 300 mm, travel distance Z-axis: 350 mm, workpiece weight (max.): 800 kg, GF AgieCharmilles FORM 2000 Year of manufacture: 2008 C-frame design, fixed table with lowerable container Travel ranges (X/Y/Z): 400 x 300 x 350 mm Table-to-spindle distance: 170-520 mm Max. workpiece size: L x W x H = 820 x 580 x 250 mm Max. workpiece weight: 800 kg Dsdpfx Aozgt H Ijkmowc Integrated C-axis for rotation, indexing, and erosion (U = 0-100 RPM) Pneumatic chuck (optional: Erowa/3R Systems) ISPG generator with 60 Amperes Best achievable surface roughness Ra 0.10 µm AGIEVISION 5 control panel 15” LCD color screen, mouse or touchscreen, jog shuttle and hand control Includes CAPA electrode changer - 40 electrode positions - 4 pallet positions Net weight of the machine: 3830 kg Machine dimensions: 1410 x 2460 x 2660 mm The machine will be cleaned, serviced, and tested by us after the order is received. Optional: - Commissioning and training - Transport and installation - Cooling unit - Dielectric fluid

Condition: excellent (used), Year of construction: 2011, Control PC-NC Dialog Travel paths X/Y/Z: 1000/1510/700 mm C-axis 30-way electrode changer Hirschmann clamping system Support surface WxD 1140/1640 mm Load capacity 7500 kg Filter system Dwodpfxozfx S He Akmjc Fire extinguishing system

Year of construction: 2012, condition: ready for operation (used), - USED - DOUBLE HEAD CNC DIE SINKING EDM X-AXIS TRAVEL: 3000 total - 2000 single mm Y-AXIS TRAVEL: 1500 mm Z-AXIS TRAVEL: 1000 mm Dedpfx Aewl R A Hokmowc RAPID FEEDS X-Y-Z: 2 - 2 - 7,5 m/min MAX ELECTRODE WEIGHT: 200 Kg MAX  PIECE WEIGHT: 20000 Kg TANK SIZE: 4000 x 2000 x 1250 mm TABLE SIZE: 3200 x 1600 mm TOOL MAGAZINE: 13+13 POS WEIGHT: 32550 Kg OVERALL DIMENSIONS: 6640 x 5800 x 4120 mm ACCESSORIES: C-AXIS NOTE: MAX PIECE HEIGHT 1130 mm

Condition: ready for operation (used), - USED - CNC DIE SINKING EDM X-AXIS TRAVEL: 400 mm Dwodpfxsyvlxwo Akmjc Y-AXIS TRAVEL: 300 mm MAX ELECTRODE WEIGHT: 100 Kg MAX  PIECE WEIGHT: 800 Kg MAX C-AXIS WEIGHT - STATIC/DYNAMIC: 50-10 Kg MAX PIECE SIZE: 220 x 400 x 220 mm TANK SIZE: 900 mm TABLE SIZE: 550 x 400 mm TOOL MAGAZINE: 5 POS CONTROL UNIT: TECHNO 60 WEIGHT: 3000 Kg

Condition: ready for operation (used), Year of construction: 2013, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 300 mm, overall weight: 2,270 kg, controller manufacturer: AGIE, number of slots in tool magazine: 4, number of axes: 4, This 4-axis +GF+ AgieCharmilles FO 350SP die-sinking EDM machine was manufactured in 2013. It features a stable EDM generator, a fully operational 360° C-axis with a rotational speed of 100 rpm, and a substantial work area of 800 × 550 × 370 mm. Well-maintained and operational until its last day, consider the opportunity to buy this +GF+ AgieCharmilles FO 350SP die-sinking EDM machine. Contact us for more information about this machine. • Power supply: 3-phase, 380 V / 400 V Dwsdpfx Akeyf In Semec • Power consumption: 6 kVA • Mains frequency: 50 / 60 Hz • Axes and travels: • C-axis travel: 360° • C-axis rotational speed: 100 rpm • Work area: • Overall work area: 800 × 550 × 370 mm • Working area size: 500 × 400 mm • Technical condition: • Fully operational; ran until last day of operation

Condition: refurbished (used), Year of construction: 2012, functionality: fully functional, GF AgieCharmilles FORM 2000 HP Year of manufacture: 2012 C-frame design, fixed table with lowering tank Travel (X/Y/Z): 400 x 300 x 350 mm Table to quill distance: 170-520 mm Max. workpiece size (L x W x H): 820 x 580 x 250 mm Max. workpiece weight: 800 kg Integrated C-axis for rotation, indexing, and EDM (U=0-100 rpm) Pneumatic chuck of your choice (Erowa/3R Systems) ISPG generator with 60 Amps Best attainable surface finish: Ra 0.10 µm AGIEVISION 5 control interface 15” LCD color screen, mouse or touchscreen, lift keyboard, Dwodpfx Aksyniyuomsc and manual control unit Including EROWA ERC 80 robot - Electrode changer - Pallet changer Net weight of the machine: 3,830 kg Machine dimensions: 1,410 x 2,460 x 2,660 mm Upon order confirmation, the machine will be cleaned, serviced, and tested by us. Optional: - Commissioning and training - Transportation and installation - Cooling unit - Dielectric fluid

Condition: used, Year of construction: 1998, machine/vehicle number: 22406695, travel distance X-axis: 992 mm, travel distance Y-axis: 807 mm, travel distance Z-axis: 561 mm, workpiece length (max.): 1,260 mm, workpiece width (max.): 1,060 mm, workpiece height (max.): 550 mm, input voltage: 400 V, input frequency: 50 Hz, We are offering this used AEG Elotherm P1 sinker EDM machine, year of manufacture 1998. Type: P1 Dedpfx Akeypln Dsmewc Serial number: 22406695 Order number: 704.1177 Voltage: 400 V Current: A Frequency: 50 Hz Switch-off method: Plan: Year of manufacture: 1998 If you have any questions or require further information, please feel free to send us a message or give us a call.

Condition: ready for operation (used), Year of construction: 2019, operating hours: 8,255 h, functionality: fully functional, travel distance X-axis: 400 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 350 mm, workpiece weight (max.): 700 kg, table width: 500 mm, table length: 575 mm, For sale is a machine island consisting of two wire EDM machines, ZK Genius 700, with the corresponding Chameleon Quad automation system! The entire system is in very good used condition. The system consists of the following components: 1x ZK Genius 700, year of manufacture 2015, with 22,056 operating hours 1x ZK Genius 700, year of manufacture 2019, with 8,255 operating hours 1x Chameleon Quad, year of manufacture 2015 Dsdjzy Hn Eopfx Akmewc TECHNICAL DETAILS Wire EDM machines Zimmer & Kreim Genius 700 Travel in X-axis: 400 mm Travel in Y-axis: 350 mm Travel in Z-axis: 350 mm Table size: 575 × 500 mm Maximum workpiece weight: 700 kg Axes: Controlled C-axis and rotating spindle Processing modules: C-module for hard metal, PCD or etching processing Processing modules: O-module for very fine surface roughness Software: CIMCO Editor for path erosion Automation Chameleon Quad Electrode positions: 176 UPC pallet positions: 9 Loading system: Loading drawer MACHINE DETAILS Wire EDM machine 1 Manufacturer / Model: Zimmer & Kreim Genius 700 Year of manufacture: 2015 Operating hours: 22,056 h Wire EDM machine 2 Manufacturer / Model: Zimmer & Kreim Genius 700 Year of manufacture: 2019 Operating hours: 8,255 h Automation Manufacturer / Model: Chameleon Quad Year of manufacture: 2015 EQUIPMENT CO₂ fire extinguishing system from Kraft & Bauer Extraction system Double rotary gripper for Erowa ITS Single gripper for UPC pallets Loading drawer for UPC pallets

Condition: used, Year of construction: 2015, Agie Charmilles Cut 300 SP Wire-Cut EDM. Serial No. 591.063.002.0159 (2015). Country of Origin: Switzerland Location: These lots are located in Swindon, UK. Unfortunately, there are no loading facilities on-site, dismantling and loading will be at the cost of the purchaser. Dwedpfsz Ar Agsx Akmsc Lot 2 of Auction 3505

Condition: ready for operation (used), Year of construction: 1994, functionality: fully functional, travel distance X-axis: 565 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 415 mm, workpiece weight (max.): 1,000 kg, table width: 600 mm, table length: 840 mm, TECHNICAL DETAILS Table size: 840 x 600 mm Dielectric fluid above table: 360 mm Maximum workpiece weight: 1,000 kg T-slots: 4 x 10 mm Distance table - quill without chuck max: 595 mm Distance table - quill without chuck min: 180 mm Travel X-axis: 565 mm Travel Y-axis: 400 mm Travel Z-axis: 415 mm Resolution X - Y - Z: 0.001 mm Resolution axis C: 0.001 Rapid traverse speed: 800 mm/min Max. electrode weight without rotation: 100 kg Max. electrode weight with rotation: 15 kg MACHINE DETAILS Dimensions & Weight Dimensions (H x W x D): 2760 x 1110 x 1840 mm Weight: 2,750 kg Dielectric supply Tank capacity: 400 liters Paper cartridge filters: 4 pcs Generator Dimensions (H x W x D): 1800 x 600 x 920 mm Weight: 300 kg Rated current: 60 - 120 A Connected load: 15 - 23 kVA Dodpjyzn Ryofx Akmewc

Condition: refurbished (used), Year of construction: 2014, functionality: fully functional, travel distance X-axis: 600 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 450 mm, workpiece weight (max.): 1,600 kg, total height: 2,780 mm, total width: 2,265 mm, total length: 2,110 mm, quill stroke: 450 mm, workpiece length (max.): 1,220 mm, workpiece width (max.): 870 mm, workpiece height (max.): 470 mm, GF AgieCharmilles FORM 300 Year of manufacture: 2014 Die-sinking EDM machine in C-frame design (fixed table) with automatic lowering tank Travel paths (X/Y/Z): 600 x 400 x 450 mm Maximum workpiece size: 1220 x 870 x 470 mm Table dimensions: 750 x 600 mm Maximum workpiece weight: 1,600 kg Maximum electrode weight: 50 kg Dwjdpex Sv E Hofx Akmec Innovative ISPG Generator (Intelligent Speed Power Generator) for maximum efficiency Maximum working current: 80 amps Surface finish up to Ra 0.08 µm AC FORM HMI with intuitive user interface & touchscreen Intelligent workpiece measurement & 3D correction Reduced electrode wear thanks to iQ technology Adaptive control (ACC & ACO) for optimized spark erosion and reduced electrode wear Pneumatic chuck of your choice (Erowa or 3R Systems) Includes 6-position electrode changer LTC Machine dimensions: 2265 x 2110 x 2780 mm Total weight: 4,500 kg The machine will be cleaned, overhauled and extensively tested prior to sale to ensure the highest quality and reliability. We are also happy to offer you additional services: - Transport - Commissioning - Training - Accessories such as clamping devices

Condition: used, Year of construction: 1983, functionality: fully functional, machine/vehicle number: 54452, Wire erosion machine Dwjdpez Nhwrofx Akmoc Charmilles P25 Year of manufacture: 1983

Year of construction: 2020, condition: new, Use of one photocell Using one photocell in the space of workpiece allows you to measure the length of the workpiece and, consequently, gives you the opportunity to turn on the guns when the item is in range, and to switch off the gun immediately after the workpiece is finished. The photocell is included in the standard equipment.Identification of details using special tags. A plate with identification holes is placed over the suspension. Based on this, the PLC controller in conjunction with the photocell recognizes the painted detail, turns on and off the guns in a timely manner - thus braking the energy and powder coating. Vertical detection of the detail of the workpiece. Dwjdpfsfy T Arsx Akmec The use of light gates with detectors horizontally allows the PLC to analyze the vertical shape of the workpiece. Application of light gates with multiple sensors horizontally and vertically. This solution allows precise measurement of the dimensions of the workpiece, which makes it possible also to manipulate the manipulators. Benefits of using gates and photocells The benefits of using photocells or light gates are primarily energy and powder savings. Eliminate painting of a zone in which there is no detail. With the use of light gates, precise control of the guns. Our lines can be optionally equipped with photocells, or light gates Using one photocell in the workpiece space allows you to measure the length of the workpiece and, consequently, gives you the ability to turn on guns when the item appears in their range, and turn off the gun immediately after the workpiece is finished.Identification of details using special tags. A plate with identification holes is placed over the suspension. Based on this, the PLC controller in conjunction with the photocell recognizes the painted detail, turns on and off the guns in a timely manner - thus saving the energy and powder.The use of light gates with detectors horizontally allows the PLC to analyze the vertical shape of the workpiece. The PLC counts the time in which the detail will appear in the gun space - allowing guns to be selectively switched on or off.Using of light gates with multiple sensors horizontally and vertically This solution allows precise measurement of the dimensions of the workpiece, which makes it possible also to adjusting the manipulators.The benefits of using photocells or light gates are primarily powder and energy savings Eliminate painting of a zone in which there is no detail With the use of light gates, precise control of the guns The PLC counts the time at which the detail should appear in the gun space - allowing guns to be selectively switched on or off.