USER MANUAL
EMDCB
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BLUETOOTH LOW ENERGY MOTION AND ILLUMINATION SENSOR
© 2019 EnOcean | www.enocean.com
EMDCB User Manual | v1.3 | August 2019 | Page 6/67
1
General Description
1.1
Basic functionality
EMDCB is a ceiling-mounted motion and illumination sensor that reports its status using
Bluetooth Low Energy (BLE) advertising telegrams. It enables the realization of energy har-
vesting wireless occupancy and light level sensors for light, building or industrial control
systems communicating wit the 2.4 GHz Bluetooth Low Energy communication standard.
EMDCB uses a passive infrared (PIR) sensor to detect motion and a dedicated illumination
sensor to measure the amount of ambient light.
EMDCB reports periodically (approximately every 2 minutes when no motion is detected,
approximately every 1 minute when motion is detected) the latest detected motion (motion
detected or no motion detected) together with the measured light level. EMDCB will report
immediately if motion is detected for the first time after a period without detected motion
(e.g. when a person is entering a room).
EMDCB is self-supplied via an integrated solar cell which generates the energy required for
its operation. EMDCB requires 50 lux illumination for 6 hours per day directly at the solar
cell which typically is equivalent 200 lux for 6 hours per day to at room level. EMDCB is
fully self-powered (no batteries required) under these lighting conditions.
For cases where sufficient ambient light is not available, EMDCB provides the option to
mount a CR2032 backup battery.
Radio telegrams transmitted by EMDCB are authenticated AES-128 security based on a de-
vice-unique private key and a sequence counter. This ensures integrity and authenticity of
the transmitted telegrams and prevents telegram replay (retransmission of previously
transmitted telegrams).
