The LD-100 loop detector is an intelligent, extremely flexible and very affordable product.
The LD-100 is designed to accommodate numerous applications, can be adjusted intelligently to any environments and virtually eliminating false detection.
On the front panel, the four selectable loop frequencies (20~80 KHz) can completely eliminate any crosstalk.
If intermittence happen or failed loops get self-healed, the detector will resume to normal operation without manually reset the detector.
Self-tuning & complete environmental tracking.
Two-color LED status indicator for Detect, Power, and Loop Fault indication. 

Specifications：
LD-100：85-240AC
LD-102：12-24VADC
LD-105：85-240AC
LD-106：12-24VADC
Loop Inductance
20-2000μH
Sensitivity
ΔL 0.01% to 2.56% with 16 Selectable Levels
Response Time
8~80 ms