Mainline ML9V-BW Alarm for ML-4963 Full Port Backwater valve
$151.99
Mainline ML9V-BW Alarm for ML-4963 Full Port Backwater valve. Fits the ABS or PVC model. Reliable stainless steel float sensor technology detects a back up quickly as water backs up float sensor is activated sounding the alarm.
Mainline ML9V-BW Alarm for ML-4963 Full Port Backwater valve. Fits the ABS or PVC model. Reliable stainless steel float sensor technology detects a back up quickly as water backs up float sensor is activated sounding the alarm.
Features and benefits
- For ML-4963 Full Pot Backwater models
- 110 dB alarm can be heard throughout the building
- reliable solid state circuitry
- 9-volt battery sounds alarm for up to 3 days
- comes with a 6-ft cord
- Cleanout with sensor replaces any existing cleanout – place alarm in desirable location (extend wires if necessary)
- Sensor can be wired to building alarm system or other wireless alarm products







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