The Dwyer WM-ACC-RS is the replacement reed switch for Dwyer Series WMT2 multi-jet water meters with pulsed output. It restores the dry contact closure that produces the meter pulse signal.
The WMT2 pulse output is generated by a reed switch in the register head, magnetically actuated by the totalizer. Because the switch is a dry contact it requires no supply power. Order this part when a WMT2 continues to totalize on the dial but has stopped producing pulses at the panel.
Compliance and Safety
This is a dry electrical component and is not a wetted part. It is intended for use with Dwyer Series WMT2 multi-jet water meters, which are not approved for potable water service; observe the compliance notes on the meter itself.
RoHS 2015/863 compliant for the Series WM2 and WMT2 product family.
Technical Specifications
| Manufacturer Part Number | WM-ACC-RS |
| Accessory Type | Replacement reed switch |
| Compatible Series | Dwyer Series WMT2 multi-jet water meters with pulsed output |
| Output Signal | Dry contact closure, frequency proportional to flow rate |
| Electrical Rating | 0.01 A @ 24 VAC/DC |
| Electrical Connections | Color-coded lead wires, 4.5 ft (1.5 m) long |
| Wetted Part | No. Dry electrical component, not in the water path |
Series specifications are transcribed from the Dwyer Series WM2 and WMT2 catalog page (FLOW / Water Meters, p. 283) and Bulletin F-WMT2, FR# 444046-00 Rev. 4, printed 9/16. Content verified against those documents on August 2, 2026. Accessory description, thread standards, and RoHS status verified against the DwyerOmega Series-WM2-WMT2 accessories listing on August 2, 2026.
Compatible Meters
Frequently Asked Questions
What does the Dwyer WM-ACC-RS replace?
It is the replacement reed switch for a Dwyer Series WMT2 multi-jet water meter with pulsed output.
Does the WM-ACC-RS need power?
No. It is a dry contact closure rated 0.01 A @ 24 VAC/DC and requires no supply power.
My WMT2 still reads on the dial but sends no pulses. Is this the part?
That symptom points at the pulse switch rather than the measuring element, since the mechanical register and the reed switch are independent. Confirm the panel wiring and the 4.5 ft leads first.
- Type:
- Water Meter Accessory
- Accessory Type:
- Replacement Reed Switch
- Series:
- WMT2
- Output Signal:
- Pulse Output