This is temperature and humidity sensor running then cr2477(or2450 - 600mA) batteries (950mA).

The board dimensions is 36mm х 25mm.

• nRF52832 (YJ-16048)
• SHT20
• RGB LED 0805
• SWD interface (micro, 3х2/1,27) +RX TX
• Two side buttons (first button-reset, the second - user custom)
• Led highlighting the status of the connection to the network, sending the readings from the sensor. Parameter adjustment via the controller: the LED is on / off, the interval of sending the temperature, humidity, atmospheric pressure, weather forecast readings is 1min - 4 hours, the interval of sending the battery charge is 1 hour - 7 days.

https://www.ebay.co.uk/itm/202598278872

https://www.ebay.co.uk/itm/202539622251

List of components that are present at the sensor:

• PCB - $0,8
• nRF52832 (YJ-16048) 1 pcs.
• Battery holder 1 pcs.
• Buttons clocks cm 2 pieces
• Connector 2x3 P6 1.27mm 1 pcs
• Condenser 100nf 1 pieces
• RGB SMD 0603 (1204)
• SHT20 Sensor
• Resistors 10K 1% 0805 2 pieces
• Resistors 1M 1% 0805 1 piece
• Resistors 470K 1% 0805 1 pcs.
• Resistors 4.7K 1% 0805 4 piece
• Resistors 27K 1% 0805 1 piece
• Resistors 20K 1% 0805 1 piece
• Resistors 5.6K 1% 0805 1 piece