EPAC – EnOcean People Activity Counter

Installation Guide

Copyright EnOcean © 2019

Page 1 of 4

EPAC_Installation_Guide_V1.4

Package Content

 PIR Sensor

 Mounting plate for easy mounting at ceiling with

double-sided adhesive tape (included)

 Securely secure the device with screws (not included)

Product Description

This ceiling mounted sensor is detecting people motion activity

in the sensing range underneath the sensor. The device is

wireless and solar-powered, so no batteries are needed under

typical light conditions and easiest to mount also in retrofitting.

The unit uses a passive infrared (PIR) sensor technology that

permanently records the people activity. After a certain time the

number of recorded motion activities (counter value) is

transmitted via a radio signal to an IoT space utilization system.

Functional Description

The PIR sensor is permanently active. If any motion is detected

within a 1 second measurement cycle time the activity counter is

incremented by 1. If any motion has been detected within a 2

minutes transmission cycle time a radio telegram is send with

the latest counter value indicating how many increments

(motions) have been detected within the latest 2 minutes. If no

motion has been detected during the latest 60 minutes an

unoccupied message is send (heartbeat signal). The activity

counter value is 16 bit and will not be reset after transmission.

Typical Applications

A people heat-map can easily be generated using several EPAC

sensors in a building area and visualizing the count data in a

floor plan by an IoT space utilization system. The number of

people (people count) should be derivable from the count data

using suited IoT analytics software (not provided with this

sensor).

Note: To restrict the coverage area (e.g. for detecting the length

of a people cue), suitable lens covers can be made by 3D

printing (see sensor sensing range).

Specifications (typ. values)

EnOcean Equipment Profile D2-15-00

Power Supply:

Optional:

Indoor light energy harvesting.

Supplemental battery (CR2032) or

external power (3-5 VDC, 2-wire)

RF Transmission Range

25 m (80 ft.)

Motion Sensing Range

10 m (34 ft.) diameter

(refer to coverage diagrams)

Startup Charge Times*:

 First radio transmission

 Light Test / Walk Test

(operation from empty energy store)

5 minutes @ 200 lux (linking)

1.5 hours @ 2000 lux

Time to Full Charge*

25 hours @ 200 lux

Life time in total darkness

72 hours (after full charge, no activity,

and break-in of several days)

Sustaining charge time for

battery free operation**

8 hours per 24 hours @ 100 lux

Optional Battery Life**:



Infrequent Bright Light



Consistent Low Light



Total Darkness

CR2032, min. 230 mAh

15 yrs (with 200 lux for 2 hrs/day, 7 days/week)

10 yrs (with 70 lux for 5 hrs/day, 7 days/week)

5 yrs

Measurement cycle time

0.9 seconds +/- 10%

Transmission cycle time

2 minutes +/- 10 % (counter value =

number of activities detected)

Heartbeat Transmission

Interval (unoccupied)

60 minutes +/- 10% (no activity,

counter value NOT changed)

RF Communications EnOcean 868 MHz (EPACA)

EnOcean 902 MHz (EPACU)

Dimensions (L x W x D) 160mm x 60mm x 37mm

(6.30” x 2.35” x 1.47”)

Weight 125 g (4.4 oz.)

Mounting Height 2-3 m (7-10 ft.) recommended

Environment Indoor use only! 20% to 95% relative

humidity (non-condensing).

Operation 5°…30°C (41° to 86°F),

Storage -10°…+40°C (14° to 104°F).

Agency Compliance RoHS, CE, RE-D