Airtac DMSJ Electronic Sensor DMSJ-C08
The AirTAC Airtac DMSJ Electronic Sensor DMSJ-C08 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-C08
The DMSJ-C08 belongs to AirTAC's DMS electronic family: a solid-state magnetic position switch that detects the piston magnet of a suitably equipped AirTAC cylinder. Output is 2-wire, wired into the load path like a conventional contact, running from a 10-28 V DC supply with IP64 protection on the general housing. The connection position in the code reads C08 - this is a factory connection variant we will confirm from the datasheet on request; do not assume it is an M8 connector or a fixed lead length.
One practical note: because the C08 code position is not documented in the standard catalogue, we treat it as an order-specific configuration and verify the exact termination before quoting. The J profile letter, meanwhile, is purely a groove-fit code and must match your cylinder's sensor groove - send us the cylinder series and we will check compatibility. The cylinder must have the built-in magnet option, otherwise the switch sees nothing.
Airtac DMSJ Electronic Sensor DMSJ-C08 Technical Specifications
| Model | Airtac DMSJ Electronic Sensor DMSJ-C08 |
|---|---|
| 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-C08
| 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. |
| 08 | 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-C08 Is Used
CNC fixture clamping confirmation
Pneumatic clamps on a machining centre report closed/open states to the controller; a 2-wire DC switch in the clamp cylinder groove gives the interlock signal without extra PLC cards.
Gate and door actuator feedback
Automated access gates with magnet-equipped air cylinders use the switch for fully-open and fully-locked detection before the control system releases the motor.
Compact assembly cell wiring
Dense assembly cells with short cabinet distances suit the C08 connection variant once its termination is verified, keeping the sensor loop tidy inside tight cable ducts.
Is the Airtac DMSJ Electronic Sensor DMSJ-C08 the Right Switch?
Choose the DMSJ-C08 when your schematic specifically calls for the C08 connection variant; if you only need a standard lead, the DMSJ-020/030/050 flying-lead versions are the documented route. Electrically this stays a 2-wire DC switch - simple series wiring, small leakage current, 10-28 V DC. If your PLC input demands a defined switching signal, step up to the NPN or PNP 3-wire DMS types instead. Reed-based CMS switches are the alternative for AC circuits, but in a DC-only machine an electronic DMS avoids contact bounce entirely. Confirm both the C08 meaning and the J-groove fit against your cylinder before ordering.
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-C08 FAQ
C08 is a factory connection code that is not spelled out in our standard data - we confirm the exact termination from the datasheet on request, and we do not guess whether it is a connector or a lead. Electrically the unit is a 2-wire electronic switch: 10-28 V DC supply, IP64 protection, solid-state output.
No - two conditions apply. The J profile must match the sensor groove on your cylinder body; the letter is a fit code and AirTAC does not publish a fixed profile-to-series map, so check it against your cylinder. And the cylinder must be ordered with the magnet option, since a switch without a magnet-equipped piston senses nothing.
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Related AirTAC Cylinder Sensors
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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.