Baumer FHDK 04G6102/KS35A Photoelectric Sensor
The Baumer FHDK 04G6102/KS35A Photoelectric Sensor offers a Rectangular design, 50 mm -3 mm / +5 mm sensing distance, Pulsed point source LED light source, Push-pull output, and Flylead connector M8 4 pin, L=200 mm connection. Manufactured by Baumer under the Baumer Photoelectric Sensor category, this model belongs to the OT500 Series.

| Brand | Baumer |
| Product Type | Photoelectric Sensor |
| Model Number | FHDK 04G6102/KS35A |
Baumer FHDK 04G6102/KS35A Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Type | Background suppression |
| Measuring distance | 50 mm -3 mm / +5 mm |
| Adjustment | - |
| Output indicator | LED yellow |
| Light source | Pulsed point source LED |
| Wave length | 660 nm |
| Response time / release time | < 0.5 ms |
| Voltage supply range +Vs | 11 … 30 VDC |
| Current consumption max. (no load) | 20 mA |
| Voltage drop Vd | <2 VDC |
| Output circuit | Push-pull |
| Output current | 50 mA |
| Short circuit protection | Yes |
| Width / diameter | 4 mm |
| Height / length | 44.8 mm |
| Depth | 6.2 mm |
| Design | Rectangular |
| Housing material | Plastic (ASA) |
| Connection types | Flylead connector M8 4 pin, L=200 mm |
| Protection class | IP 65 |
| Operating temperature | -10 … +50 °C |
The FHDK 04G6102/KS35A by Baumer stands out in its class as a reliable background suppression photoelectric sensor for demanding machine environments. It uses a pulsed point source LED with a 660 nm wavelength to ensure accurate foreground detection while suppressing background interference. With a sensing range of 50 mm -3 mm / +5 mm, it is optimized for close-range applications requiring high precision. The sensor delivers rapid response times of < 0.5 ms, enabling real-time feedback in high-speed production lines.
This model is powered by a 11–30 VDC supply, consumes just 20 mA, and provides a push-pull output capable of 50 mA current. It includes short-circuit protection and maintains a voltage drop below 2 VDC, contributing to long-term stability and safety. Designed in a slim 4 mm x 44.8 mm x 6.2 mm rectangular ASA housing, the sensor is well-suited for compact mounting spaces. With an IP65 rating and a wide operating temperature range of -10°C to +50°C, it delivers dependable performance in environments exposed to dust, mild moisture, and temperature shifts. The standard M8 4-pin flylead connector ensures easy integration into industrial systems, especially where fast replacements or modular setups are preferred.
The Baumer FHDK 04G6102/KS35A is widely used in small part detection on conveyors, label edge sensing in packaging lines, and precise part positioning in pick-and-place systems. Its ability to suppress background reflections makes it highly effective for detecting shiny, uneven, or colored surfaces in tight assembly zones. For junior engineers, this sensor is easy to understand and implement due to its clear visual feedback via the yellow LED. Senior maintenance personnel prefer it for its reliability in cluttered setups where other sensors may fail due to reflections. In academic and training settings, this model helps students visualize practical problems in background suppression and learn about precise signal processing in real-world sensor systems.

