B B Thermotechnik B & B Thermotechnik CON-REGME 12 V 12/24V Rain Detector In Housing Dry/humid or fog detection CON-REGME 12 V 데이터 시트

Technical changes reserved

Connection

After removing the sensor cover, the control cable is to be inserted in

the cable gland M16.

Supply voltage is to be connected to the terminals VCC and GND.

Terminals NC, COM, NO are the potential free changeover contacts 

for switching.

Precautions:

•  The device is suitable only for low voltages and should not be 

operated on mains supply !

•  The relay contact is only suitable for low value signals and 

should not come in contact with mains supply !

•  The protection type is valid only with an intact, complete casing, 

cover screws and cable gland properly tightened, and the cover-

gasket should always be available on the sensor cover !

•  The suitability for certain applications is to be checked by the 

user

Settings

At the connection terminals (Pin BUZ and GND) a passive Piezo 

signal generator can be connected. The condition of signal (acustic 

signal for dry or wet) can be selected with the plug links S1-S2 or 

S2-S3. In the default-position S2-S3, the signal generator is inactive 

for rain.

The switching mode of the relay (pickup or dropout with rain) can be

selected with the plug links T1-T2 or T2-T3. In the factory settings, 

link T1-T2 is connected and the relay closes if the sensor surface 

gets wet.

The sensor surface is heated, if the link of HZ1-HZ2 is connected. To

ensure faster drying and for operation below freezing point, the 

heater should be switched on. For sensing fog, the heater can be 

switched off.

The sensitivity to moisture signal can be adjusted through the 

potentiometer. Rotating the potentiometer knob in the anti clockwise 

direction gives higher sensitivity ( left = high sensitivity, right = low 

sensitivity). For normal rain signal, the middle position is most suitab-

le. Please note that no function takes place in the end position!

There is a green LED on the device to indicate the operation status 

and a red LED to indicate the switch position (meansrelay contact 

closed).

Maintenance

The Rain Sensor unit is almost maintenance free. The sensor surface

must be occasionally cleaned with a moist cloth ( e.g. once annually,

depending on the place of installation). In case of persistent condi-
tion, even if it does not rain, it triggers due to strong contamination.

Connection Layout

REL NC 

Opening switch contact

REL NO 

Closing switch contact

REL CO 

Common switch contact

AC/DC 

Operating voltage AC or 24 V DC +10%

AC/GND 

Operating voltage AC or 0 V

Plug Links Configuration

1 

S3 

Switch mode signal generator (dry)

2 

S2 

Common contact to S3 and S1

3 

S1 

Switch mode signal generator (wet)

4 

GND 

Signal generator ground

5 

BUZ 

Signal generator output

6 

T3 

Switch mode relay (dry)

7

T2 

Common contact to T3 and T1

8 

T1 

Switch mode relay (wet)

9 

HZ1 

Heating

10

HZ2 

Heating

factory setting: S3 - S2, T1 - T2, HZ1 - HZ2

Dimensions

Accessoires
wall / mast mounting bracket
including mouting hardware

B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen 

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