{"title":"Self-powered Wireless Switch (BLE Beacon)","handle":"self-powered-wireless-switch-ble-beacon","url":"/products/self-powered-wireless-switch-ble-beacon","description":"A battery-free wireless switch that generates its own power from the mechanical energy of each button press. The built-in micro power generator and energy storage circuit capture kinetic energy, store it, and transmit a BLE 5.3 beacon signal — no batteries, no wiring, no maintenance.\n\nEach switch has a unique 6-byte address code for secure, interference-free transmission. Compatible with ESP32 and other Bluetooth-enabled microcontrollers, as well as smartphones, making it easy to integrate into home automation, signalling, and IoT projects.\n\nKey Features\n\n\nNo Battery Required – Self-powered via kinetic energy harvesting from each press\n\nBLE 5.3 Beacon – Broadcasts on advertising channels 37, 38, and 39 (2.4 GHz)\n\nUnique Address Code – 6-byte unique identifier for secure, interference-free operation\n\n100,000 Press Lifespan – Designed for long-term, maintenance-free use\n\nNo Dedicated Receiver Needed – Works with any BLE-capable device (ESP32, smartphone, etc.)\n\nLow Actuation Force – Typical 1,300 g with 1.3 mm press distance\n\nFast Transmission – 1 Mbps with GFSK modulation for strong anti-interference performance\n\n\nSpecifications\n\n\nFrequency: 2.4 GHz\n\nAdvertising Channels: 37 + 38 + 39 (2402, 2426, 2480 MHz)\n\nData Format: Supplier-customised Beacon\n\nGenerated Energy: 250 µJ per press\n\nActuation Force: ~1,300 g typical\n\nPress Distance: 1.3 mm\n\nPress Frequency: Up to 2 presses per second\n\nCommunication Distance: >40 m (open outdoor, smartphone receiver)\n\nModule Weight: 14 g ± 2.5 g (excluding antenna)\n\nModule Dimensions: 44 × 22 × 11 mm\n\n\n\nNote: Pressing the switch more than twice per second may trigger a protection state, requiring approximately 10 seconds to reset.\n\n\nIdeal For\n\nWireless doorbells\nCall buttons and ordering devices\nWall switches (no wiring required)\nIoT and smart home automation\nESP32-based BLE projects\n\n\nPackage Contents\n\n1× Self-powered Wireless Switch (BLE Beacon)\n1× 2.4 GHz FPC IPEX1 Antenna\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":594,"title":"Default Title","sku":"DF-TEL0173","mpn":"TEL0173","price":17.0,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":110,"option1":"Default Title"}]}