4
Introduction
This document describes the operation of the EnOcean Wall and Ceiling Occupancy
Sensors.
The Occupancy Sensors main purpose is to detect a person’s motion via a PIR sensor and
transmit this information wirelessly using The EnOcean Radio Protocol. The Occupancy
Sensors are solar powered and have special requirements for power up and charging of
the onboard energy storage capacitors. In order to save energy the sensors are usually in a
low power sleep mode and only wake up periodically or in response to certain events in
order to transmit the appropriate telegram.
The sensors transmit the EnOcean Equipment Profile (EEP) A5-07-01 as defined by
EnOcean Alliance. In addition to occupancy state, the sensors transmit the voltage on the
long term storage capacitor to inform the receiver about situations with insufficient power
supply where the occupancy sensor might stop working.
The sensors include a walk test mode to validate the sensors ability to detect occupancy
and a light level test to determine the suitability of an installation location.
User Interface
The user interface consists of two buttons and three LEDs.
The button with no indent is the “Menu” button; the button with the indentation is the
“Set” button.
A green LED is located adjacent to the link button and a red LED is adjacent to the test
button. These two LEDs and an additional red LED beneath the lens provide user
feedback from the sensor.
Startup Mode
Startup is defined as the transition from a sensor not operating to a sensor operating due
to an increase in energy available allowing the circuitry to operate.
This mode occurs when the sensors are removed from their initial packaging or after the
sensors had been operating under insufficient light level.
As soon as the sensor powers up, it will start-up the motion sensor circuit and wait for a
period of 120 seconds to allow the motion sensor circuit to stabilize. After that, the
occupancy sensor is in operation mode as described below.
