To change the batteries of the ismartgate wireless sensors see the instructions below:
In case you have the Wireless Magnetic sensor

- Open the sensor by unscrewing the 4 screws that it has at the back

- Take out the batteries and introduce 2 new ones. LR1/Type-N 1.5V Batteries
In case you have the Wireless Tilt sensor

- Open the sensor by unscrewing the 4 screws that it has at the back

- Take out the batteries and introduce 2 new ones. LR1/Type-N 1.5V Batteries
If you do not know how to place the sensor on your door please follow the instructions here for Ворота и Garage doors.
Please do not hesitate to contact us at support@ismartgate.com in case of any issues or questions.