Airtac DMSJ Electronic Sensor DMSJ-C12
The AirTAC Airtac DMSJ Electronic Sensor DMSJ-C12 is a genuine DMS magnetic position switch. It senses the magnet ring in a pneumatic cylinder's piston and signals when the piston reaches that point, giving a 2-wire output on 10-28 V DC. It only works on a cylinder that carries a piston magnet.
- TechnologyElectronic (solid-state)
- Output2-wire
- Supply voltage10-28 V DC
- ProtectionIP64
- Profile (groove fit)J
- Lead / connectorSee datasheet
- VersionStandard
- RequiresMagnet-equipped cylinder
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac DMSJ Electronic Sensor DMSJ-C12
The DMSJ-C12 is a solid-state electronic switch that signals piston position on an AirTAC cylinder carrying the built-in magnet. It is a 2-wire device: connect it in series with your load, feed it 10-28 V DC, and it closes the current path when the magnet passes. The general housing is rated IP64. Its connection code position reads C12 - an undocumented factory variant, so we carry it through as-is and confirm the exact termination from the datasheet on request rather than assuming a connector type or lead length.
The distinguishing point versus the C08 sibling is only that connection code; the sensing technology, output format and voltage window are identical across the pair, which makes them easy to substitute once the correct code is verified. Remember the J profile letter is a groove-fit selection, not a grade - it must seat in your cylinder's sensor groove, and we recommend sending the cylinder series with your RFQ so we can check the match. A non-magnetic piston gives no signal at all.
Airtac DMSJ Electronic Sensor DMSJ-C12 Technical Specifications
| Model | Airtac DMSJ Electronic Sensor DMSJ-C12 |
|---|---|
| Family | DMS — Electronic cylinder switch |
| Technology | Electronic (solid-state) |
| Output | 2-wire |
| Outputs in this family | 2-wire, NPN 3-wire or PNP 3-wire |
| Lead / connector | See datasheet |
| Supply voltage | 10-28 V DC |
|---|---|
| Protection rating | IP64 |
| Version | Standard version |
| Profile letter | J (cylinder-groove fit) |
| Profiles in this family | E, G, H, J |
| Detects | Piston magnet ring inside the cylinder |
2-wire versions run 10-28 V DC; NPN / PNP 3-wire versions run 5-30 V DC. IP64 as standard. Order the RW version where coolant, washdown or constant cable flexing is present. Switching distance, response time, current rating, voltage drop, LED behaviour, contact life, weight and dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
Model Code: Airtac DMSJ Electronic Sensor DMSJ-C12
| DMS | Electronic cylinder switch — electronic (solid-state). |
|---|---|
| J | Profile letter: the mounting / groove type that fits a particular cylinder body. This family offers E, G, H, J. It is a fit code, not a performance grade. |
| (blank) | Output: 2-wire. Blank is 2-wire, N is NPN 3-wire, P is PNP 3-wire. |
| 12 | See datasheet. 020 / 030 / 050 / 100 are 2 / 3 / 5 / 10 m flying leads; M08 and M12 are M8 / M12 connector versions. |
| (blank) | Standard version. |
We do not hold the full profile-to-cylinder-series table, so confirm the profile letter against your cylinder model before ordering — send us the cylinder part number and we will check the fit.
Which Family Do You Need?
- DMSElectronic, 2-wire / NPN / PNP, DC
- EMSMini electronic, 2-wire only, DC
- CMSReed contact, 2-wire, 5-240 V AC/DC
The split is electrical, not quality. Solid-state DMS and EMS are DC-only and suit modern PLC inputs; the reed-based CMS switches a much wider window, so it is the one for AC circuits, relay logic and older panels. The RW (IP68) option exists on DMS and EMS only.
| This switch | DMSJ · 2-wire · 10-28 V DC |
|---|---|
| Consider EMS | the mini 2-wire electronic switch for tight installations |
| Consider CMS | the reed alternative for AC circuits and voltages up to 240 V |
| Mounting parts | F-MQ (round body), F-ACT (tie-rod) |
Where the Airtac DMSJ Electronic Sensor DMSJ-C12 Is Used
High-cycle packaging machinery
Form-fill-seal machines cycle cylinders millions of times; a solid-state switch with no mechanical contact avoids the bounce and wear a reed contact would suffer at those rates.
Test rig stroke verification
Endurance test benches use the switch to log when the test cylinder reaches each end of stroke, feeding the sequence controller through simple 2-wire DC wiring.
Semiconductor handling modules
Wafer-handling air slides need clean, bounce-free end-position signals in a DC control environment; the electronic DMS family keeps the feedback loop free of contact noise.
Is the Airtac DMSJ Electronic Sensor DMSJ-C12 the Right Switch?
Specify the DMSJ-C12 only where your bill of material or machine schematic names the C12 connection code; otherwise a documented flying-lead or M8/M12 version avoids any ambiguity. This remains a 2-wire solid-state switch on a 10-28 V DC rail - straightforward series wiring, but expect a small leakage current through the load. For PLC inputs that need a hard defined signal, the NPN 3-wire DMSJ-N020 is the cleaner choice. Electronic DMS switches suit DC circuits with rapid cycling; if your system runs on AC mains-derived control voltage, a CMS reed switch spanning 5-240 V AC/DC is the correct family instead. Match the J groove to your cylinder and confirm the magnet option is fitted.
Quick checklist
- ✓ Cylinder has a piston magnet
- ✓ Profile letter fits your cylinder groove
- ✓ Output matches the PLC input (2-wire)
- ✓ Supply rail is 10-28 V DC
- ✓ Lead length or M8 / M12 connector
- ✓ Coolant or flexing? Use the RW version
Installation & Wiring Notes
- check The cylinder must carry a piston magnet — a plain cylinder cannot be sensed.
- check Slide the switch along the groove to the stop position, then lock it.
- check Keep the supply within 10-28 V DC.
- check Wire 2-wire to match the PLC input's polarity.
- check Keep the lead clear of moving parts; use the RW type where it must flex.
- check Rated IP64 — protect it beyond that rating.
Use the F-MQ bracket on round-body cylinders and F-ACT on tie-rod cylinders where there is no groove to seat the switch. Both are ordered separately from the switch. Switching distance and mounting dimensions come from the factory datasheet — ask us for the sheet that matches your cylinder.
Airtac DMSJ Electronic Sensor DMSJ-C12 FAQ
Type: electronic solid-state switch. Output: 2-wire, wired in series with the load. Supply: 10-28 V DC. Protection: IP64 (general housing). Wiring: the C12 connection code - a factory variant we confirm from the datasheet on request, with no assumed lead length or connector type.
The reed switch uses a mechanical glass contact: it accepts 5-240 V AC or DC, has no polarity, and is very simple - but the contact has a finite life and can bounce on fast cycles. This DMS unit is solid-state: DC only, no moving parts, no bounce, better for rapid cycling - but it needs the correct DC polarity and voltage window (10-28 V here). Match the family to your control circuit's voltage type first.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Cylinder Sensors
Request a Quote for Airtac DMSJ Electronic Sensor DMSJ-C12
Send us the quantity, your cylinder model (so we can confirm the profile fit) and the destination. We confirm price, availability and lead time — usually within 7-8 hours.