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 The Crownstones come in two form factors, plug-in and built-in.

Detailed Specs

Property Specification
Switch devices Up to full 16A (domestic use)
Dim lights LEDs on 240V or incandescent light bulbs
Measure Both current and voltage, up to a frequency of 2kHz
Overview Energy usage monitoring per minute till per year
Timer function Timer functionality and wake-up light functionality
Communication Bluetooth Low Energy (BLE) 4.0 and up
Tracks Smartphones, smartwatches, fitness bands, iBeacons
Presence detection Requires 4 Crownstones "in sight"
Tracking accuracy 1.5-4.0 meter
Maximum range 20-70 meter
Network Mesh network connects Crownstone-to-Crownstone
Chipset Nordic nRF52, 64 kB RAM
Beacon function iBeacon/Eddystone
Battery Not required!
Soft-fuse function Limit extreme currents 
Temperature fuse Switch off with extreme temperatures
Dimensions built-in
56x41x13mm (LxWxH)
Dimensions plug
Sockets type C, E, F (Europe, Russia, South-America)
Open-source Open-source (github)
Mobile phones  Consumer app: iOS and Android
Mobile libraries Native: iOS and Android


A PDF of the most up-to-date specs can be downloaded here.

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