Witty Fox 3.7V 2000 mAh Li-ion GPS Cylindrical Battery High Speed Micro USB OTG Cable - 33 cm trigger an alert or buzzer

trigger an alert or buzzer whenever the door opens and the magnetic field disappears

2-Channel Logic Level Converter (I2C

Charging Voltage Range per Cell 4

Compact & Lightweight: Easy to carry in a project kit or store alongside your Micro:bit and breadboard

or Raspberry Pi with Wi-Fi or Bluetooth control

Witty Fox 3.7V 2000 mAh Li-ion GPS Cylindrical Battery High Speed Micro USB OTG Cable - 33 cm trigger an alert or buzzerWitty Fox 3. 7V 2000 mAh Li ion GPS Cylindrical Battery Power your GPS trackers, IoT devices, and portable electronics with the Witty Fox 3. 7V 2000 mAh Li ion Cylindrical Battery. Engineered for reliable, long lasting performance in a compact cylindrical form factor, this rechargeable lithium ion cell delivers consistent 3. 7V output with a generous 2000 mAh capacity ideal for applications demanding extended runtime and dependable energy delivery.