2 GREY / GREY PLUS SATEL
The GREY / GREY Plus detector detects motion in the protected area. This manual applies
to the detector with electronics version H.
1. Features
Motion detection with two sensors: passive infrared sensor (PIR) and microwave sensor
(MW).
Adjustable detection sensitivity of both sensors.
Capability of separate sensor testing.
Digital motion detection algorithm.
Digital temperature compensation.
Pet immunity up to 15 kg.
Microwave based anti-mask feature [GREY Plus].
Built-in end-of-line resistors (2EOL: 2 x 1.1 k).
Bi-color LED indicator.
Remote LED enable / disable.
Alarm memory.
Supervision of motion detection system and supply voltage.
Tamper protection against enclosure opening.
2. Description
The alarm output will turn on for 2 seconds when the infrared sensor (PIR) and
the microwave sensor (MW) detect motion within a time period shorter than 5 seconds.
Anti-mask feature [GREY Plus]
Detection by the microwave sensor of an object moving at a distance of 10-20 centimeters
from the detector is interpreted as an attempt to mask the detector and causes the anti-mask
output to turn on for 5 seconds. Objects permeable to microwaves, but isolating the infrared
radiation are not detected by the anti-mask feature.
The anti-mask feature does not meet the EN 50131-2-4 requirements.
Supervision features
In the event of the voltage drop below 9 V (± 5%) for more than 2 seconds or the motion
detection system failure, the detector will signal a trouble. The trouble is indicated by the
alarm output turning on and the LED lighting up red. Signaling will continue as long as the
trouble exists.
LED indicator
The LED indicates:
warm-up –flashing red and green for about 35 seconds;
motion detected by microwave sensor –ON in green for 2 seconds;
motion detected by PIR sensor –ON in green for 2 seconds;
alarm –ON in red for 2 seconds;
alarm memory –flashing red;
trouble –ON in red for entire duration of the trouble.
