Airtac CMSG Reed Switch Sensor CMSG-100
The AirTAC Airtac CMSG Reed Switch Sensor CMSG-100 is a genuine CMS 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 5-240 V AC/DC with a 10 m flying lead. It only works on a cylinder that carries a piston magnet.
- TechnologyReed (magnetic contact)
- Output2-wire
- Supply voltage5-240 V AC/DC
- ProtectionIP64
- Profile (groove fit)G
- Lead / connector10 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 CMSG Reed Switch Sensor CMSG-100
This CMSG-100 is AirTAC's general-purpose reed switch for cylinder position feedback. A magnetic reed contact opens or closes when the piston magnet passes it, the output is 2-wire, and the wide 5-240 V AC/DC range lets one part number serve 24 V DC control panels and 110/220 V AC circuits alike. It mounts in the sensor groove of a magnet-equipped AirTAC cylinder and leaves on a 10 m flying lead at IP64.
The long lead is the practical story here: 10 m reaches a remote cabinet or a machine across the cell, so you avoid joints and splices in the cable run. As a reed device it has a mechanical contact - robust and polarity-free, yet with finite life and possible bounce, which matters in high-cycle counting. Confirm that profile G matches your cylinder's groove; the letter is a fit code, not a grade.
Airtac CMSG Reed Switch Sensor CMSG-100 Technical Specifications
| Model | Airtac CMSG Reed Switch Sensor CMSG-100 |
|---|---|
| Family | CMS — Reed switch cylinder sensor |
| Technology | Reed (magnetic contact) |
| Output | 2-wire |
| Outputs in this family | 2-wire contact |
| Lead / connector | 10 m flying lead |
| Supply voltage | 5-240 V AC/DC |
|---|---|
| Protection rating | IP64 |
| Version | Standard version |
| Profile letter | G (cylinder-groove fit) |
| Profiles in this family | E, G, H, J |
| Detects | Piston magnet ring inside the cylinder |
A reed contact switches a wide window, 5-240 V AC or DC, which is why it suits AC circuits and relay logic. IP64. The CMS range has no RW / IP68 option - that belongs to DMS and EMS. 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 CMSG Reed Switch Sensor CMSG-100
| CMS | Reed switch cylinder sensor — reed (magnetic contact). |
|---|---|
| G | 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. |
| 100 | 10 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. On a CMS the suffix -H is the high-temperature version — do not confuse it with the H profile letter. |
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 | CMSG · 2-wire · 5-240 V AC/DC |
|---|---|
| Consider DMS | the solid-state range with NPN / PNP 3-wire outputs (DC only) |
| Consider EMS | the mini 2-wire solid-state switch (DC only) |
| Mounting parts | F-MQ (round body), F-ACT (tie-rod) |
Where the Airtac CMSG Reed Switch Sensor CMSG-100 Is Used
Line stop gate
A bottling plant reads the stop-gate cylinders at the far end of a long conveyor run; the 10 m lead carries the signal most of the way to the panel without splicing.
Palletizer arm home
Home position on a palletizer's push arm feeds a stack counter through a 24 V DC input, wired in series exactly like a plain mechanical contact.
Multi-station press
Eight stations on a transfer press each report end-of-stroke; one AC/DC reed code covers both the 24 V DC PLC inputs and the 230 V AC indicator lamps.
Is the Airtac CMSG Reed Switch Sensor CMSG-100 the Right Switch?
Use a CMS when the supply is AC or when you simply want a dry-contact style signal without worrying about NPN versus PNP polarity. Pick an electronic DMS instead if the input is a fast PLC counter or you need solid-state life. Between lead lengths, the 10 m flying lead suits long fixed runs; choose an M8 or M12 connector code when sensors get swapped during maintenance. The piston must carry the factory magnet option, and profile G must agree with the groove on your cylinder - we can check both from the datasheet.
Quick checklist
- ✓ Cylinder has a piston magnet
- ✓ Profile letter fits your cylinder groove
- ✓ Output matches the PLC input (2-wire)
- ✓ Supply rail is 5-240 V AC/DC
- ✓ Lead length or M8 / M12 connector
- ✓ High temperature? Use the -H 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 5-240 V AC/DC.
- check A reed contact suits AC or DC; observe the load limits on the datasheet.
- 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 CMSG Reed Switch Sensor CMSG-100 FAQ
Reed switch type with a 2-wire mechanical contact, 5-240 V AC or DC supply, IP64 enclosure and a 10 m flying lead. There is no NPN or PNP variant in the CMS family - polarity does not apply to this contact.
Reed (CMS) suits AC supplies, voltages above 28 V DC, and simple series wiring, but the mechanical contact has finite life and can bounce. An electronic DMS is solid-state, DC only at 10-28 V (2-wire) or 5-30 V (3-wire NPN/PNP), and handles rapid cycling cleanly. Match the choice to your circuit.
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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.