Airtac DMSH Electronic Sensor DMSH-020
The AirTAC Airtac DMSH Electronic Sensor DMSH-020 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 with a 2 m flying lead. 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)H
- Lead / connector2 m flying lead
- 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 DMSH Electronic Sensor DMSH-020
DMSH-020 is AirTAC's 2-wire electronic switch for H-profile sensor grooves. Fitted to a cylinder that carries the built-in magnet option, it signals when the piston reaches the switch position. It runs on 10-28 V DC, offers IP64 protection and terminates in a 2 m flying lead.
Wired in series like a conventional limit switch, a 2-wire sensor needs only two conductors - the simplest upgrade for an existing relay chain, at the cost of a small leakage current in the off state. The H in the code selects the groove fit, not a grade level, and the switch does nothing until it sits in the groove of a magnet-equipped cylinder, so confirm both before ordering.
Airtac DMSH Electronic Sensor DMSH-020 Technical Specifications
| Model | Airtac DMSH Electronic Sensor DMSH-020 |
|---|---|
| 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 | 2 m flying lead |
| Supply voltage | 10-28 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.
Model Code: Airtac DMSH Electronic Sensor DMSH-020
| 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. |
| (blank) | Output: 2-wire. Blank is 2-wire, N is NPN 3-wire, P is PNP 3-wire. |
| 020 | 2 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.
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 | DMSH · 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 DMSH Electronic Sensor DMSH-020 Is Used
Pneumatic press end-of-stroke
Mounted at the bottom of the stroke on a small bench press cylinder, the switch gives the control circuit a confirmed bottom-dead-centre signal using just two wires.
Retrofit on a slide table
The 2 m lead and series wiring make this an easy add-on when upgrading an older milling or grinding slide table whose relay panel predates PLC control.
Multi-station fixture check
On a dial-indexing machine, one switch per clamp station lets the controller verify every part is clamped before the table rotates to the next operation.
Is the Airtac DMSH Electronic Sensor DMSH-020 the Right Switch?
The 2-wire format sits in series with the load like a mechanical limit switch, which suits relay logic and simple retrofits; if you need a dedicated clean signal into a PLC input card, the 3-wire NPN or PNP DMS versions are the better circuit. A CMS reed switch would cover AC circuits from 5 to 240 V, but this electronic switch is DC-only - keep the 10-28 V DC supply in range. Cut the 2 m lead to length on site, or step up to 3/5/10 m or an M8/M12 connector. For wet or oily surroundings choose the -RW IP68 version, and match the H profile to your magnet-equipped cylinder's groove.
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 DMSH Electronic Sensor DMSH-020 FAQ
Electronic solid-state sensing, a 2-wire output, a 10-28 V DC supply, IP64 protection and a 2 m flying lead. It is the general (non-RW) version of the DMS family.
A 2-wire unit sits in series with the load like a mechanical limit switch - simple wiring, small off-state leakage. A 3-wire NPN or PNP model has a separate supply line and delivers a cleaner signal to a PLC input card, provided the NPN/PNP type matches the card.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC Cylinder Sensors
Request a Quote for Airtac DMSH Electronic Sensor DMSH-020
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.