Four Channel wireless system

Basic four channel wireless

Relays, The Electromechanical amplifier

How Encoders and Decoders work

Encoder and Decoder Selection Guide

Characteristics of wireless systems


Pyroelectric Infrared Sensor and Fresnel lens

DPB PYD1798 Digital Motion Detector components

DP-001 Digital Motion Detector Module

DP-002 Digital Motion Detector Module

Digital direction sensing motion detector

Motion detector module

Motion detector kit 

How IR motion detector components work

Focusing devices for pyroelectric sensors

RIR Reflective Infrared devices  

Free schematics and design info



GCT1 Infrared Motion Detector Camera Trigger Module

For building Deer Trail cameras and Wireless Motion Detectors

GCT1 dimensions L = 2.0"    (50.8MM)  W = 2.0"   (50.8MM)  H = 0.7"   (17.78MM)  



click on picture for expanded view

CLOSEOUT $29.95  plus shipping

The GCT1 camera trigger module is designed to activate the flash and shutter of a modified film or digital camera when the GCT1 detects motion. Circuit components are mounted on one side of a PC board and a pyroelectric infrared sensor and two light emitting diodes are mounted on the other side.

The GCT1 can also be used together with a MT4  transmitter module and MR4A/B receiver module or a KTS418 transmitter kit and KRS418 receiver kit to build a wireless motion detector.




  • Shutter and flash (refresh) outputs to trigger camera


  • Switch selectable repeating flash to wake up sleeping camera

    •  100ms pulse every 2 min


  • Switch selectable walk test mode

    • Module mounted LED above and below sensor


  • Switch selectable delays between shutter triggering

    • 5 sec, 1 min, 10 min, 30 min


  • Switch selectable delay extend mode

    • Helps prevent repeat pictures of same animal


  • Ready output flashes LED on delay timeout

    • Indicates camera is ready to take a picture


  • Amplifier sensitivity control to adjust detection range


  • Temperature compensated sensitivity


  • Day / night input for photocell to prevent photos during daylight


  • PC module pads for connecting external controls

    • Sensitivity switch, delay switch, mode switch, ready LED


  • Only 35 microamperes standby current for long battery life



The GCT1 is designed to be used  with a FL65 Fresnel lens that has a narrow view angle and long detection range.



See how to order

and view or print a complete manual for the GCT1 module

If you don't have Acrobat Reader, download a free copy so you can view and print our PDF documents


Copyright 2015
Glolab Corporation