- External temperature sensor with 2 meter cable.
- 2.5 mm plug that fits the models Ontech GSM 9035 Ontech GSM 9040 and Ontech Relay 9015.
- When connected to Ontech GSM 9025, remove the plug and connect the cables to the screw terminal. Accuracy +/- 1 degree C.
- The cable can be extended up to 10 meters.