HORN LH-913C Installation Instructions Download Page 2

DETECTING RANGE 

side view

     infrared 

microwave

8m

5.3m

3.6m

2.4m

 

 

top view

0m

2m

4m

2m

4m

0m

2m

4m

2m

4m

     infrared 

microwave

 

INSTALLATION 

1. Fix the bracket of detector in the ceiling, after open the front cover and take out the PCB, set the back cover 

on bracket by screw. 

2. Set the PCB in the back cover after connect the wire according to the TERMINAL BLOCK FIGURE Close 

the front cover. 

3. The best installation height is 2.5m to 6m. 

4. Avoid installing the detector close to the following objects causing temperature changes easily such as 

heaters, refrigerators and ovens. Avoid installing the detector in the sun directly. 

TESTING AND USAGE 

1. With 12V power supply, the detector is in self-checking and red LED flashes; The LED is off after 60 

seconds and the detector is in operating state. 

2. Make walk testing in detecting range, different LED flash: Green LED flashes, infrared is ON; Yellow LED 

flashes, microwave is ON; Red LED flashes, infrared & Microwave is ON and the detector is in alarm status. 

3. RELAY jumper is used to set alarm output mode. Select different output mode depending on specification of 

control: 1&2/N.O. ; 2&3/N.C. ; 2&3 in normal. 

4. Microwave VR is used to adjust the detecting range of microwave according to customer's request.   

(the largest detection range is set in normal.) 

5. LED jumper is used to control LED indication without interference to detector. LED ON jumper can be 

interrupted after testing for concealment. 

NOTE: 

1. Please install and use the Detector following the Directions. Do not touch the sensor surface as this could 

result in a detector malfunction. If necessary, clean the sensor surface using a soft cloth with pure alcohol. 

2. Avoiding to use the Products in the area with huge change of temperature. 

3. For various reasons, including, but not limited to, changes in environmental conditions, electric or electronic 

disruptions and tampering, the Product may not perform as expected. The user is advised to take all necessary 

precautions for his/her safety and the protection of his/her property. 

4.Changes or modifications not expressly approved by the party responsible for compliance could void the 

user's authority to operate the equipment. 

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