Wireless filling alarm for closed tank with sensor

Tank-Check RF-432 Grey- & Blackwater is the successor to Finland’s all-time best-selling wireless level alarm model, the Tank-Check RF-412.
Tank-Check RF-432 GBW is a brand-independent, easy-to-install wastewater level alarm for tanks and wells.

Installation of the 432 series alarms is done through a plastic lid using a 40–44 mm hole, placing the transmitter outside the liquid space to ensure optimal communication with the indoor unit. The alarm provides audible and visual alerts when the liquid level in a septic tank, drainage well, or pumping station reaches the conductive sensor.

Thanks to the powerful LoRa connection, the unobstructed range is up to 200 meters. Battery life is up to 10 years.
The RF-432 series models include two alarm relay outputs, for example for a 4G or 5G modem. One relay is for the level alarm, and the other is for loss of wireless connection or low battery.

The alarm is manufactured in Finland and has been awarded the Key Flag symbol for domestic production. Manufacturer’s warranty: 24 months.

Technical specifications

Transmitter housing: Polycarbonate IP67, 65 × 115 × 40 mm
Transmission frequency: 433.7 MHz LoRa
Range: Unobstructed range up to 200 m
Battery type: 3.6 V AA-size lithium
Power consumption: 2 µA
Sensor: Conductivity-based, IP67
Cable: 2 × 0.5 mm² / 1.5 m
(Longer sensor cable available as a custom option)

Receiver

Dimensions: 80 × 120 × 38 mm, IP30
Relays: N.O./N.C., max 24 V, 3 A DC
Power supply: 230 V AC, output 12 V DC, 450 mA

EXTENDING THE SENSOR CABLE

The grey cable between the sensor and the transmitter unit can be extended up to 20 meters using LIYY 2 × 0.5 mm² cable, if required by the installation site.

INSTALLATION METHOD

The 432 series alarms are installed, for example, through the plastic lid of a septic tank or drainage inspection well.

IMPORTANT INSTALLATION NOTE

Ensure that the alarm is mounted tightly and securely to the plastic lid.