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QT-40 Quad Element Outdoor Indoor Microwave PIR Detector With Pet Immunity For Intrusion Alarm
Microwave Freq. | 10.525 GHz, pulsed |
Input Voltage | 10 to 16 VDC, 12 VDC nominal |
Input Current | 15 mA max. (SL model 30 mA), 11 mA quiescent (approx.) |
Pyro Type | Dual Element |
Pulse Count | Jumper selectable: PC2, PC4 |
Warm-up Time | < 50 seconds |
Alarm Period | 2.4 seconds, retriggerable |
Visual Indicator | Red Alarm LED (Selectable On / Off) |
Alarm Output | NC, solid state, 19 VDC, 100 mA, 13 ohms resistance typ. |
Tamper Output | NC, dry contact, 30 VDC, 500 mA, 5 W max. |
Mounting Height | 7 to 8.5 ft (2.1 to 2.6 m) |
Operating Temp. | 14° to 131° F (-10° to+55° C) |
Environmental | 95% humidity non-condensing |
Weight | 3.7 oz / 105 g |
Dimensions | 4.8” H x 2.5” W x 1.7” D / 12.2cm x 6.4cm x 4.3cm |
Available with 40-foot and 60-foot protection patterns, QT Series intrusion detectors provide high quality PIR+microwave security at an outstanding value. Aleph’s unique “QT” signal processing evaluates PIR and microwave information while factoring in ambient temperature and light for superior “Quad-Tech” performance. The Security Light feature adds safety lighting, providing a soft white light when triggered in a darkened room.
Microwave Sensitivity: Microwave Sensitivity Adjustment is set to the fully clockwise position at the factory for maximum sensitivity (range). The installation in a small room, it may be desirable to reduce microwave sensitivity. Turn the Microwave Sensitivity Adjustment (Fig. 2) counter-clockwise to reduce sensitivity. Setting the adjustment to minimum (fully counter-clockwise) reduces sensitivity to approximately one-third of its maximum value.
Trouble | Likely Causes | Remedy |
Unit does not power up. | No or low input power. Input power polarity reversed. | Apply proper input voltage. Correct wiring polarity. |
Alarm LED does not light. | LED jumper is set to “LED OFF”. Incorrect sensor mounting height or aiming. Pulse count setting incorrect for protection area . | Set LED jumper to“LED ENABLED”. Alter the mounting height or aim. Set pulse count jumper to suit the detection requirements. |
Alarm LED / Relaytriggers without movement in the protection area. | Animals / rodents in protection area. Heating or air conditioning outlets in sensor view. If using the optional animal immune lens: Pet access to furniture or room fixture in view of the detector. | Block access of animals / rodents. Re-aim sensor. Ensure that pets can not climb up onto furniture / fixtures in protection area. |
An alarm is indicated at the LED but not at the alarm output. | Incorrect wiring at the alarm output terminals. Lightning damage. | Correct the wiring fault. Replace sensor. |
Alarm LED on constantly, no fault in protected area or wiring . | Defective unit. | Replace sensor. |
Unit continues to operate after input power has been disconnected. | The wire to the power input was disconnected, the “+” is still connected. The power is finding a return path through the Alarm Output protection device and alarm wiring. | Disconnect wire from the “+” power input. |