The PF21 series of mini-type photoelectric sensors is a new and upgraded product. It includes through-beam, polarized reflective, and diffuse types of sensors

1. Visible red and infrared light sources available
2. Compact size, easy to install
3. Detecting distance 5m/10m/30m optional
4. Metal threaded mounting holes for stable installation
5. High immunity to stray light, dust, and other fine particles
6. Protection rating IP67, compact design ensures application and installation in limited space
Widely used in different business areas such as automatic doors, warehousing and logistics, intelligent parking and access gates

Protection rating IP67, compact design ensures application and installation in limited space

PF21T Opposed Photoelectric Sensor
Model PF21T-5m PF21T-10m PF21T-15m PF21T-30m
General parameters:
Beam type Through-beam type
Detection distance 5m 10m 15m 30m
Light source LED, Visible Red VCSEL, Infrared
Electronic Parameters:
Operating Voltage 10~30VDC
No-load current Emitter <20mA; Receiver <15mA
Output Current <100mA
Response time <1.25ms <5ms <1.25ms
switching frequency 400Hz 100Hz 400Hz
Mode of Action Light on, dark on, light/dark on switching, according to model selection
protection circuit Reverse polarity protection, short circuit protection
Indicator Power is the green indicator, output is the yellow indicator
Control output Transistor output, NPN/PNP according to model selection
Mechanical parameters:
Appearance Size 12mm×32.5mm×21.5mm
Shell Material ABS+PC
Lens Material PC
Connection Type 2m cable;
M8 connector;
The M8 connector with 300mm cable
Cable Diameter Φ3.4mm
Conductor Cross
Section 0.14mm²
Environmental Parameter:
Ambient brightness Sunlight 50000Lux;
Incandescent lamp 3000Lux Sunlight 100000Lux;
Incandescent lamp 3000Lux
Storage Temperature -30~70ºC
Protection rating IP67

1. Detect whether the installation position of the object and the proximity sensor has deviated, slacked, or skewed; whether there is slack, poor contact, or disconnection in the wiring and connection parts
2. Whether there is adhesion or accumulation of metal dust, etc.
3. Is there any abnormality in using temperature conditions and environmental conditions?
4. Set whether the flashing of the display lamp type is abnormal.
If you must be careful not to disassemble and repair by yourself during the inspection, and to easily find out the fault, you can investigate the operating state of the sensor through the connection with the portable detector, and then repair it according to the situation.

In order to make the photoelectric sensor work stably for a long time, it should be regularly checked with the same contents as the general control equipment to maintain its long-term function. The photoelectric sensor can also be stocked. Once a problem with the photoelectric sensor is found, we can replace it in time without affecting the use of the sensor.

Tianjin G-TEK sensor technology co..ltd is indicated in providing intelligent sensor products and customized solutions for logistics automation, factory automation and process automation. The predecessor of the company is Tianjin G-TEK automation technology Co.,ltd, a professional sensor manufacturer and sensor solution provider, which was established in 2003 with business ranges from Proximity switches, photoelectric sensors, measurement, and safety light curtains to Laser rangefinder sensors, laser radar., etc and serves for Intelligent buildings, intelligent transportation, logistics automation, factory automation and industry robot fields.

Tianjin G-TEK sensor technology co.,ltd was established in 2014 in Xiqing District, Tianjin City and it will fully inherit and expand the original G-TEK automation business with the construction and operation of the new R&D and manufacturing base.

Q: Is the product shipped and arrived fast?
A: The production cycle for large quantities of products takes 15-30 days, depending on the product.

Q: Can you provide professional advice promptly?
A: We have a professional technical team that can patiently help you answer all professional questions.

Q: Can you provide customized products/services?
A: Yes, we can provide customized products, but the customization needs to meet a certain quantity.

Q: How is the quality of the product? Is the quality stable?
A: G-TEK Sensors has been focusing on the sensor field for 23 years. The quality of the sensor has the double affirmation of the CE certificate and customer reputation.

Q: What is your MOQ?
A: We offer MOQ per piece; it depends on your specific order.

Q: Is there any relevant terms of service and warranty information?
A: We offer a warranty on all items. The sensor products are guaranteed for 15 months, and the light curtain and lidar products are guaranteed for 18 months. For after-sales questions, you can directly contact the product salesperson.

Q: Is there any relevant information available for download on the website?
A: Yes, if you want to download the relevant product manual, you can go to our official website to download it.

Q: Can I be your reseller?
A: Yes, we are looking for distributors in overseas markets.