Airtac CMSG Reed Switch Sensor CMSG-C08
The AirTAC Airtac CMSG Reed Switch Sensor CMSG-C08 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. 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 / connectorSee datasheet
- VersionStandard
- RequiresMagnet-equipped cylinder
About the Airtac CMSG Reed Switch Sensor CMSG-C08
The CMSG-C08 is a reed position switch from AirTAC's CMS range carrying the C08 connection code. The sensing element is a mechanical magnetic reed contact with a 2-wire output, happy on 5-240 V AC or DC and indifferent to polarity, and the housing meets IP64. It closes when the magnet inside an AirTAC cylinder piston reaches the mounted position.
C08 is a factory connection code that our catalogue data does not expand - we will confirm exactly what it specifies from the datasheet on request, so please ask before matching it to your harness. What is certain is the switch itself: reed technology, IP64, and the very wide voltage window that makes CMS parts easy to drop into mixed AC and DC panels. Profile G must match the sensor groove of your cylinder.
Airtac CMSG Reed Switch Sensor CMSG-C08 Technical Specifications
| Model | Airtac CMSG Reed Switch Sensor CMSG-C08 |
|---|---|
| Family | CMS — Reed switch cylinder sensor |
| Technology | Reed (magnetic contact) |
| Output | 2-wire |
| Outputs in this family | 2-wire contact |
| Lead / connector | See datasheet |
| 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-C08
| 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. |
| 08 | See datasheet. 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-C08 Is Used
Fixture clamp check
A machining cell verifies that the air clamp on its fixture has fully closed before the spindle-start interlock releases, using the reed contact as a dry signal.
Retrofit on older machines
Maintenance teams replacing failed position sensors on legacy pneumatic slides value the reed's wide voltage tolerance when the original drive electronics are obsolete.
Lab test rig
A test bench cycles a small-bore cylinder continuously through the day and logs end-of-stroke via this contact into the data acquisition system.
Is the Airtac CMSG Reed Switch Sensor CMSG-C08 the Right Switch?
Order this part when a reed contact is the right circuit fit - AC supplies, DC above the 10-28 V electronic range, or simple series wiring with no NPN/PNP decision to make. Because C08 is not an M8 or M12 connector code and its lead form is not documented here, confirm the connection detail with us first. The profile letter G is a groove-fit code, and the cylinder must carry the piston magnet for any signal at all.
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-C08 FAQ
This is a reed (magnetic contact) switch with 2-wire output, rated 5-240 V AC or DC and sealed to IP64. The C08 entry is a connection code not defined in our current data - confirm its exact meaning from the datasheet with us before ordering.
Two things to check: profile G must match your cylinder's sensor groove, and the cylinder must have the built-in piston magnet option. As a reed switch the contact has no polarity and accepts AC or DC, unlike electronic DMS parts, which are DC only and, in 3-wire form, need the correct NPN or PNP.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Cylinder Sensors
Request a Quote for Airtac CMSG Reed Switch Sensor CMSG-C08
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.