Occupancy detector particularly for classrooms and training classrooms
Two contacts, one of them dry, for two groups of light, separate switching possible
One potential-free contact for blackboard illumination or HVAC
One common detection area
Two independent, movable light sensors
Manual switching possible via two or three pushbuttons
Version as master device
Detection area can be extended by using slave devices
Additional functions can be set up using the optional remote control.
Relay with tungsten pre-make contact, optimised for LED loads

Voltage: 110 - 240 V AC 50 / 60 Hz
Dimensions: Ø 117 x 100 mm
Power consumption: approx. 0.5 W
Detection area: horizontal 360°  (Ceiling mounting)
Range: max. Ø 24 m across, max. Ø 8 m towards, max. Ø 6.4 m seated
Monitored area (tangential movement): 450 m² / 2.5 m mounting height
Mounting height min./max./recommended: 2 m / 10 m / 2.5 m
Degree / class of protection: IP20  / Class II
Impact resistance level: IK04
Ambient temperature: -25 °C to +50 °C
Housing: polycarbonate, UV-resistant
Material color: white mat, similar to RAL9010
 Channel 1 (lighting control)
Switching power: 3000 W, cos φ = 1, 1500 VA, cos φ = 0.5 , 800 W LED, max. inrush current Ip (20 ms) = 165 A, max. inrush current Ip (200 µs) = 800 A
Type of contact: 1x µ-contact, NO contact with tungsten pre-make contact
Switch-on threshold: 10 - 2000 Lux
 Channel 2 (lighting control potential-free (dry))
Switching power: 3000 W, cos φ = 1, 1500 VA, cos φ = 0.5, 800 W LED, max. inrush current Ip (20 ms) = 165 A,  Ip (200 µs) = 800 A
Switch-on threshold: 10 - 2000 Lux
Type of contact: 1x µ-contact, dry NO contact with tungsten pre-make contact
 Channel 3 (HVAC control or lighting control, potential-free (dry))
Switching power: 3000 W, cos φ = 1, 1500 VA, cos φ = 0.5, 800 W LED, max. inrush current Ip (20ms) = 120 A
Type of contact: 1x µ-contact, dry NO contact
 Channel 1 to channel 3
Follow-up time: 1 min - 90 min
 Mixed light measuring


Manufacturer: B.E.G. Brück Electronic GmbH
Description: PD4-M-3C-TRIO-FC
Material color: white mat, similar to RAL9010
Item number: 92745
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