The AirTAC Airtac DMS Electronic Cylinder Switches DMSH-PM08 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 m8 connector. It only works on a cylinder that carries a piston magnet.
The DMSH-PM08 is an electronic (solid-state) magnetic position switch in AirTAC's DMS series. Mounted in the sensor groove of a cylinder ordered with the magnet option, it signals when the piston reaches it. This version carries a 2-wire output, runs on 10-28 V DC, is sealed to IP64, and connects through an M8 connector with a 0.5 m pigtail, so the sensor can be unplugged for service without disturbing the machine loom.
Because the 2-wire output sits in series with the load just like a mechanical contact, panel changes stay simple - only a small leakage current flows in the off state. The H in the code is the profile: a fit code that must match your cylinder's groove, not a performance grade. Send the cylinder series with your enquiry and we will confirm the correct pairing before you order.
| Model | Airtac DMS Electronic Cylinder Switches DMSH-PM08 |
|---|---|
| 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 | M8 connector |
| 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. |
| M08 | M8 connector. 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 closing cylinder of a pick-and-place gripper, the M8 connector drops straight into the robot cell's sensor box, so a damaged cable is replaced in seconds.
On a case-packing conveyor, the 2-wire output sits in series with the counter circuit to confirm the pusher cylinder has fully retracted before the next carton indexes.
Control panel builders run the 0.5 m M8 pigtail directly to a junction block, keeping the cabinet loom standardised across every cylinder position.
Choose this DMS electronic switch over the CMS reed family when your circuit is DC and cycles often: a solid-state output never bounces and suits fast, repeated triggering. If the input card prefers a dedicated signal line, step up to the 3-wire NPN (N) or PNP (P) versions of the same DMS range. Running AC, or wanting the enormous 5-240 V AC/DC window? The reed-contact CMS family is built for that. Keep the M8 connector here for quick swap-out at the machine, pick a bare flying lead where cost leads, and specify -RW if IP68 waterproofing is needed. Fit depends on the profile letter seating correctly in the groove of your magnet-equipped cylinder.
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.
It is an electronic (solid-state) sensor with a 2-wire output. Supply voltage is 10-28 V DC, ingress protection is IP64 for the general type, and the connection is an M8 connector with a 0.5 m pigtail. Load current, voltage drop and other limits: confirm from the datasheet.
Only if the cylinder was ordered with the built-in magnet option - without a magnet piston the switch senses nothing. The profile letter (here H) must also match the cylinder's sensor groove, so tell us the cylinder series and we will verify the fit before quoting.
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.