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  • Loop Detector CH1 - GD100 Gate Detector
  • Loop Detector CH1 - GD100 Gate Detector

GD100 (Single Channel Loop Detector)

R1,579.71 excl. tax
Product Part Number:
100.00 Grams
Calculated at checkout

Please contact us if you wish to purchase more than 9 of a particular item – one of our sales team will contact you for our special 10+ pricing.

Product Description

GD100 – Single Channel Loop Detector

The GD100 is a cost effective, single channel, din-rail mounted microprocessor based detector. The product detects vehicle presence by means of an inductance change caused by the vehicle passing over a wire loop buried under the road surface. With front panel switches to allow for different loop frequency settings, sensitivity settings and mode settings.


  • Parking barrier control.
  • Vehicle access control.
  • Motorised gates and doors.
  • Industrial control systems.

Specific Features

  • Compact Size: This compact industrial housing combines all of the industry requirements regarding features and functionality and allows this detector to be incorporated into any new or existing vehicle detection system. 
  • Selectable Fail-Safe / Fail-Secure: Allows a selectable output for either Fail-Safe or Fail-Secure operation.
  • Loop Isolation Protection: The loop isolation transformer provides protection against lightning and transient damage and allows for operation with single point to ground sensor loops.
  • Loop Frequency Indication: The possibility of cross-talk (interference) between adjacent loops/ detectors can be determined by a visual display, and eliminated by changing the frequency settings.
  • Automatic Sensitivity Boost (ASB): Facilitates the reliable detection of all vehicle combinations and high-bed vehicles by boosting the sensitivity to maximum after detection of a vehicle.

Typical Application


Technical Data

Download Specification:
Self-Tuning Range :
20µH to 1500µH
Four step adjustable on faceplate
  • High – 0.02% ΔL/L
  • Med-High – 0.05% ΔL/L
  • Med-Low – 0.1% ΔL/L
  • Low – 0.5% ΔL/L
Two step adjustable on faceplate
12 – 80 kHz (Frequency determined by loop geometry)
Presence Relay:

Automatic Sensitivity Boost:
Output Configuration:
2 Output relays (Presence or Pulse output)
Rated: 0.5A @ 30V AC/DC
Pulse Output Duration:
Presence Time:
1 hour for 3% ∆L/L permanent presence option
Operating Modes:
Mode Selector on faceplate: 1) Fail Safe / Fail Secure
Red LED – POWER indication
Green LED – Channel Indicator
  • Green LED – Tuning: On steady
  • Green LED – Undetect: OFF
  • Green LED – Detect: ON
  • Green LED – Fault: On with short off periods
Din-Rail Mount
Output Relays:
Presence Relay – 1A @230VAC
Change-over contacts (Non Fail-Safe)
Loop isolation transformer, zener diode clamping on loop input, gas discharge
24 V ±10% (AC/DC) Requirements -1.5VA max.

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