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JNS Series Wired Infrared Detector — Anti-Sunlight Anti-Theft

JNS series wired infrared detector — DBF3 model overview

The JNS Series Wired Infrared Detector is a state-of-the-art perimeter security solution. Manufactured with an ABS integrated shell, it offers reliable detection across a wide range of distances (60 m to 250 m) and is ideal for protecting walls and perimeters. Advanced anti-sunlight filtering and anti-theft housing make it a dependable choice for diverse outdoor environments.

2 / 3 / 4 beams60 – 250 m50 ms responseAnti-sunlightAnti-theftPC + ABS shell
  • 8 models covering every common perimeter length.
  • Relay 1C contact output (COM, NC, NO) — plug into any alarm panel.
  • Wide power range — DC 12-24 V / AC 9-16 V, minimum power 4 W.
  • Operating temperature −25 °C to +55 °C; optional heating accessories for frost / condensation.
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Technical Parameters

ParameterJNS2-60SJNS2-100SJNS3-100SJNS3-150SJNS3-200SJNS4-100SJNS4-150SJNS4-250S
Beam2 beams2 beams3 beams3 beams3 beams4 beams4 beams4 beams
Warning distance60 m100 m100 m150 m200 m100 m150 m250 m
Detection methodTwo-beam simultaneous interruptionThree-beam simultaneous interruptionFour-beam simultaneous interruption
Sensing speed50 ms
Alarm outputRelay contact output 1C (COM, NC, NO)
Contact capacityAC 16 V / DC 24 V · 3 A max.
Power supplyDC 12 – 24 V / AC 9 – 16 V, minimum 4 W
Current consumptionTx + Rx ≤ 85 mATx + Rx ≤ 100 mATx + Rx ≤ 120 mA
Operating temperature−25 °C to +55 °C
Anti-disassembly outputContact 1B (COM, NC), DC 30 V · 0.5 A max.
Optical axis adjustment (horizontal)±90° / 180°
Optical axis adjustment (vertical)90°
Condensation / frost countermeasuresHeating accessories (optional)
Other functionsLight-receiving indicator, OK indicator, test terminal
MaterialPC (external) + ABS (main body)

Product Configuration

Available models: JNS2-60S, JNS2-100S, JNS3-100S, JNS3-150S, JNS3-200S, JNS4-100S, JNS4-150S, JNS4-250S.

Product Characteristics

Working Principle

The JNS Series detector operates by emitting infrared beams between a transmitter and receiver. When an intruder interrupts the specified number of beams (two, three or four) simultaneously, the device triggers an alarm via the relay contact output. The anti-sunlight feature minimizes false alarms caused by direct sunlight or strong reflections, while the anti-theft design ensures the device cannot be silently removed — tampering opens the anti-disassembly contact and signals the alarm panel.

Product Introduction

The JNS Series Wired Infrared Detector is an advanced security device designed to protect perimeters with anti-sunlight and anti-theft capabilities. Available in eight models with different beam configurations and detection ranges, it integrates directly into wired security systems — alarm panels, access-control controllers, video-surveillance NVRs with sensor inputs, and PLC-based site monitoring.

JNS wired infrared detector installation exampleJNS transmitter / receiver pair close-upJNS housing detail showing optical axis adjustmentJNS optical alignment diagramJNS deployment along a perimeter wall

Frequently Asked Questions

How does the anti-sunlight feature reduce false alarms on a JNS infrared beam detector?

Direct sunlight and strong reflections are the most common cause of nuisance trips on outdoor perimeter beams. The JNS series uses optical filtering tuned to its own infrared wavelength plus a synchronised transmitter/receiver pair, so ambient light is rejected. An alarm fires only when the specified number of beams (2, 3 or 4) is interrupted simultaneously, which sunlight cannot do.

Which JNS model should I choose for my wall or fence length?

Match the warning distance to your span: JNS2-60S covers 60 m, the 100 m models suit short walls, and JNS3-200S or JNS4-250S protect long perimeters up to 200–250 m. More beams give a taller detection curtain and harder-to-defeat coverage, so 3- and 4-beam models suit higher fences and security-critical sites.

How do I wire the JNS detector to an alarm panel?

Each unit provides a relay 1C contact output (COM, NC, NO) rated AC 16 V / DC 24 V at 3 A max, which connects directly to any alarm panel, access controller or PLC sensor input. A separate anti-disassembly contact 1B (COM, NC, DC 30 V / 0.5 A max) wires to a tamper zone. Power is a wide DC 12–24 V or AC 9–16 V, minimum 4 W.

Can the JNS detector work outdoors in cold or condensing conditions?

Yes. The rated operating range is −25 °C to +55 °C and the PC outer shell over an ABS body is UV-stable and impact-resistant. For sites prone to frost or condensation on the lens, optional heating accessories keep the optics clear so the warning field stays reliable through winter.

How do I align the optical axis during installation?

Mount the transmitter and receiver facing each other along the protected line. The optics adjust ±90° to 180° horizontally and 90° vertically, and built-in light-receiving and OK indicators plus a test terminal confirm alignment. Aim each beam until the OK indicator is steady, then lock the housing — the anti-theft design prevents the unit being silently removed afterwards.

Specs reviewed by Engineer Cai, Senior Application Engineer. See certificates.