Product Description
Introducing the GN20 Background Suppression Diffuse Reflection Photoelectric Switch by Shenzhen Giants Sensor Technology Co., Ltd. – a pinnacle of safety enhancement, especially designed for revolving doors.
1) Detection range: Optimize the precision of your operations with a remarkable detection range of up to 350mm.
2) Operation voltage: Versatile and robust, it functions seamlessly within a 10-30VDC voltage range.
3) Visible light spot: Simplify your setup with an easy-to-debug visible light spot that ensures efficiency.
4) Background suppression: Experience impeccable performance unaffected by contrasting black and white backgrounds.
5) Distance adjustment knob: Fine-tune your detection capabilities effortlessly with a convenient distance adjustment knob.
6) Detection distance: Achieve optimal safety with a dependable detection distance reaching up to 350mm.
7) Adjustable knob: The versatile knob allows you to precisely adjust the distance, with output options of NO or NC for tailored performance.
8) Detection distance variation: Tackle any challenge with the capability to discern distance variations between white and black backgrounds.


Product Parameters
Model |
GN20D (2)-2BPD350 |
GN20D (2)-2BND350 |
Detection distance |
5~350mm *1 |
Minimum detection distance |
5~30mm *1 |
Maximum detection distance |
5~350mm *1 |
Adjustable detection distance |
30~350mm *1 |
Black and white color difference (6%/90%) |
<18%(at 350mm) |
Distance adjustment |
5-turn knob adjustment |
Light source |
Red LED |
Spot Diameter |
Approximately 20mm at 350mm detection distance |
Angle of divergence |
Approx. 4° |
Operating voltage |
10-30VDC |
No-load current |
≤20mA |
Load current |
≤100mA |
reaction time |
<2ms |
Power-up delay |
200ms |
Output indication |
Green power indicator, red output indicator |
protection functions |
short circuit protection, power reverse polarity protection |
Operating Temperature |
-25~55ºC |
protection class |
IP67 |
Material |
Shell: ABS; Lens: PMMA |
Wiring method |
2M cable |
Accessories |
1 screwdriver, 1 metal bracket, screw nut |
2 sets |
