
The AirTAC Airtac DMSH Electronic Sensor DMSH-P030 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 pnp 3-wire output on 5-30 V DC with a 3 m flying lead. It only works on a cylinder that carries a piston magnet.
AirTAC's DMSH-P030 is an electronic (solid-state) magnetic position switch from the DMS family. Its PNP 3-wire output switches the positive line to your controller, and it detects only the piston of a cylinder ordered with the built-in magnet option. The lead is a 3 m flying cable, the supply window is 5-30 V DC, and protection is IP64 as a general-type unit.
Because the switching element has no mechanical contact, there is no contact bounce to worry about on high-cycle machines. The H in the code fixes the mounting shape - it must seat in the matching sensor groove of your cylinder, so verify the profile against the series you are using. Exact limits such as maximum load current should be read from the datasheet.
| Model | Airtac DMSH Electronic Sensor DMSH-P030 |
|---|---|
| Family | DMS — Electronic cylinder switch |
| Technology | Electronic (solid-state) |
| Output | PNP 3-wire |
| Outputs in this family | 2-wire, NPN 3-wire or PNP 3-wire |
| Lead / connector | 3 m flying lead |
| Supply voltage | 5-30 V DC |
|---|---|
| Protection rating | IP64 |
| Version | Standard version |
| Profile letter | H (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.
| DMS | Electronic cylinder switch — electronic (solid-state). |
|---|---|
| H | 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. |
| P | Output: PNP 3-wire. Blank is 2-wire, N is NPN 3-wire, P is PNP 3-wire. |
| 030 | 3 m flying lead. 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.
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 | DMSH · PNP 3-wire · 5-30 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) |
Mounted on the clamping cylinder of a CNC fixture, the PNP signal confirms the part is clamped before the cycle-start interlock releases.
Use it on a pneumatic gate or door cylinder so the controller only releases a robot when the gate is fully closed.
The 3 m flying lead spans most machine frames to the control cabinet without extensions, keeping the installation simple.
Pick a DMS electronic switch when the cycle rate is high and you want a digital, bounce-free signal; pick a CMS reed switch instead if your circuit runs on AC or a very wide voltage window. Within the DMS range, 3-wire PNP suits PLC sourcing inputs, while 2-wire models suit simple relay loops. The 3 m lead covers mid-length runs; an M12 connector version lets you unplug for service. Magnet cylinder required; confirm the H profile fit.
Quick checklist
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.
Type: electronic solid-state. Output: PNP 3-wire. Supply voltage: 5-30 V DC. Protection: IP64. Wiring: 3 m flying lead. It needs a magnet-equipped cylinder to sense anything.
The 3-wire PNP version feeds a defined positive signal to the PLC input card, so polarity and card type must match. A 2-wire switch sits in series with the load like a mechanical contact. If your machine is washed down, the -RW variant adds IP68 protection.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.