TP-206W
Notice:
- Powered by 1 unit 9V battery, there have “+” “-” marked in the sensor case
(battery not include, sometime battery delivery with problems), suggest to use "Alkaline" battery, it is longer life



- The 2 battery contacts both inside of the sensor, so the battery cover not with contacts
- If put the detect board on metal, please use a dry paper between detect board and metal