As accessories is available the kit B197 - Relay card 12V/DC, which could be connected with this kit and could switch through the relay contact other devices (e.g. pumps) up to current consumption of 3A.
| Kit | To solder yourself |
| Operating voltage | 9 V/DC |
| Power consumption | rest (without water contact) < 10 µA, LED shines approx. 15 mA |
| Indication of water | via LED |
| Size of board | approx. 45 x 16 mm |
