Airtac DMSH Electronic Sensor DMSH-020-W
The AirTAC Airtac DMSH Electronic Sensor DMSH-020-W 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
- VersionW
- 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-W
The DMSH-020-W is an AirTAC electronic position switch in the solid-state DMS range. Its 2-wire output behaves like a simple contact that wires in series with your load, and it runs on a 10-28 V DC supply with an IP64 enclosure. The 2 m flying lead is cut-to-length friendly for short runs. It reads the piston magnet of an AirTAC cylinder fitted with the built-in magnet option - on its own it senses nothing.
The trailing W is a factory special code that our catalogue data does not define; we will confirm exactly what it covers from the datasheet on request, and the listed protection stays at the general IP64. Note that profile letter H only means this body matches the sensor groove of certain cylinder series - send us your cylinder model and we will verify the seat before you order.
Airtac DMSH Electronic Sensor DMSH-020-W Technical Specifications
| Model | Airtac DMSH Electronic Sensor DMSH-020-W |
|---|---|
| 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 | W - factory special code, confirm from datasheet |
| 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-W
| 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. |
| W | W - factory special code, confirm from datasheet. |
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-W Is Used
Pick-and-place check
On a small pick-and-place gantry, a 2 m lead reaches a nearby terminal block where the two-wire signal feeds a compact relay that confirms the part was gripped.
Tight control cabinet
Short-run wiring suits a compact indexing table whose junction box sits directly under the cylinder, keeping the trimmed 2 m lead tidy inside the duct.
Fixture clamping signal
A clamping fixture on a CNC table uses this switch to signal full clamp, wired in series so the machine will not cycle unless the piston has arrived.
Is the Airtac DMSH Electronic Sensor DMSH-020-W the Right Switch?
Choose this model when you want the simplest possible hook-up: two wires in series with the load, DC 10-28 V, and a short 2 m lead you can trim. If your PLC input prefers a dedicated NPN or PNP signal, step up to a 3-wire DMS instead. A magnet-equipped cylinder is required - the switch only reports position where the piston magnet passes it. Profile H must correspond to the groove on your cylinder body; tell us the series and we will check the fit.
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-W FAQ
It is an electronic (solid-state) switch with a 2-wire output, supplied from 10-28 V DC, protected to IP64 as a general-type unit, and fitted with a 2 m flying lead. The W suffix is not defined in our catalogue data, so its exact meaning is confirmed from the datasheet on request.
Yes - the piston must carry AirTAC's built-in magnet option, otherwise no position change is ever detected. The H profile code also has to correspond to the groove style on your cylinder body, so confirm the series with us first.
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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 DMSH Electronic Sensor DMSH-020-W
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.