Afriso – 42352 – WMS 3‑1 Boiler Water Low-Level Alarm, DN 20 Probe

The Afriso WMS 3‑1 (part number 42352) is an electronic boiler water low-level alarm designed to protect sealed heating systems by continuously monitoring conductivity-based water levels. It features an angled DN 20 brass probe, a wall-mounted control unit with visual alarm indicators, and an externally resettable lock that automatically re-engages after power failure.

Key Features:

• Manufacturer: Afriso

• MPN: 42352 (WMS 3‑1)  

• Alarm Type: Electronic conductivity-based low-water detector ()

• Probe Connection: DN 20 welding socket (Ø 20 mm inner, Ø 26.5 mm outer)  

• Control Unit: Wall-mount plastic housing with test button, green/pilot and red alarm lamps, and relay output  

• External Lock: Automatically unlocks after power failure; supports external reset as per EN 12828  

• Relay Output: Changeover contact (max 250 V, 2 A resistive)  

• Supply Voltage: 230 V AC ±10 %, 50 Hz; power consumption approx. 5 VA  

• Operating Temperature (Control Unit): 0 °C to +55 °C; storage -10 °C to +60 °C  

• Probe Specs: Brass housing, stainless steel electrode, max 10 bar, max 120 °C boiler water  

• Certifications: VdTÜV “Water Level 100”, EN 60730, EMC, Pressure Equipment, RoHS, TÜV mark 14‑348