FSC-BP121 DA14531 IP66 Smart Bluetooth Body Temperature Sticker


FSC-BP121 is an IP66 waterproof Bluetooth 5.1 temperature and humidity sensor beacon. It enables real-time monitoring of environmental temperature and humidity near the beacon, with a battery life of up to 280 days. Additionally, it serves as a Bluetooth beacon supporting iBeacon, Eddystone, and AltBeacon profiles. Users can easily configure broadcast data, interval, and transmit power using the FeasyBeacon app. With the free FeasyBeacon SDK, users can develop their own applications effortlessly.


  • Temperature and humidity detection
  • IP66 waterproof protection
  • Renesas / Dialog DA14531 chip, Bluetooth 5.1 version
  • Small size, with push button and LED status light
  • CR3032 coin replaceable battery
  • Broadcast range up to 100m in open area
  • Real-time detection and broadcast
  • Supports broadcasting iBeacon, Eddystone, AltBeacon, and sensors data simultaneously
  • Broadcast parameters configurable
  • Free App and SDK


Item Description
Chipset Renesas / Dialog DA14531
Bluetooth Version Bluetooth Low Energy (BLE) 5.1
TX Power -19.5 dBm to +2.5 dBm
Temperature Range -20 °C to +60 °C
Humidity Range 0 to 100% RH
Typical Humidity Accuracy 2% RH
Typical Temperature Accuracy 0.2 ℃
LED optional
Button optional
Waterproofing Class IP66
Power Supply CR3032 (550 mAh)
Battery Life 280 days (ADV Interval = 1300 ms; TX Power = 0 dBm)
Material ABS plastic
Size Φ 38mm * H 9.3mm
Net Weight 8.45 g
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