
Hikvision Wired Dual Beam Selectable Frequency Photoelectric | DS-PI-D100
The Hikvision DS-PI-D100/FM is a wired dual-beam photoelectric (active infrared) detector made of a transmitter and a receiver. The receiver raises an alarm when both IR beams between the two units are interrupted, with a 100 m alarm distance. It is used on windows, fences and walls for intrusion detection.
100 m dual-beam protection: The detector covers an alarm distance of 100 m, with a maximum reaching distance of 1000 m. Because the alarm needs both beams to be cut at the same time, a single small object crossing one beam does not trigger it.
Selectable frequency: Four channels (CH1 to CH4) can be selected. When several beam pairs are installed close to each other, setting them to different channels helps stop them interfering.

Easy alignment: The optical axis adjusts 180° (±90°) horizontally and 20° (±10°) vertically, with a clear one-piece viewfinder for fine alignment. Receiving-light and OK indicators and a testing terminal help confirm the beams are lined up.
Built for outdoor perimeters: The design includes rain, dust and insect protection, and frost and dew protection, with a high-grade aspherical lens and high-power beams.

Alarm and tamper outputs: It provides a Form C relay alarm output (NO/NC changeable) and a separate tamper output, for connection to a wired alarm system. It runs on 10.5 to 24 V DC, non-polarity.
Good to know
- The set has two units (transmitter and receiver) that must be installed facing each other and aligned.
- It is a wired detector: it needs a DC power supply (12 V DC recommended) and wiring to an alarm system input.
Technical Specifications
| Model | DS-PI-D100/FM |
| Alarm distance | 100 m |
| Max. reaching distance | 1000 m |
| Beams | 2 |
| Detection method | 2 beams interrupted simultaneously |
| Light source | IR LED |
| Response time | 50 to 500 ms |
| Channels | 4 (CH1 to CH4) |
| Alarm output | Form C (NO/NC changeable), DC 30 V 0.5 A max. |
| Tamper output | Contact output 1b, DC 30 V 0.05 A max. |
| Supply voltage | DC 10.5 to 24 V (non-polarity) |
| Recommended supply | DC 12 V (non-polarity) |
| Supply current | 55 mA |
| Horizontal adjustment | 180° (±90°) |
| Vertical adjustment | 20° (±10°) |
| Material | PC front cover, ABS back cover |
| Dimensions (H × W × D) | 194.5 × 83 × 82 mm |
| Weight | About 850 g (transmitter and receiver) |
📄 Datasheet: Download the official Hikvision DS-PI-DXX/FM series datasheet (PDF)
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