HUAWEI FreeBuds 4 provides a superior wireless audio experience
This manual provides safety installation guidelines for the area‑type light curtain, including required safety distances calculated with the formula D=K×T+C and recommended mounting brackets. It describes the LED status indicators—green for power, yellow for self‑check, and red for beam status—and the PNP/NPN output voltage behavior.
Technical parameters are listed, such as a 24 VDC supply voltage, power consumption under 8 W, reaction time under 0.5×beam count + 5 ms, detection range up to 10 m, and environmental limits of –10 °C to +55 °C and 15 %–85 % humidity. The device offers three selectable alarm flashing modes that can be set within five seconds after power‑on. This manual is written in Chinese.
| Number of beams | 8116724132140148156164 |
|---|---|
| Minimum detectable object size | 20 mm / 25 mm / 30 mm / 35 mm |
| Supply voltage | 24 VDC |
| Reaction time | < 0.5×beam count + 5 ms |
| Detection distance | 0.5 m – 5 m / 10 m |
| Operating humidity | 15 % – 85 % |
A steady green LED indicates power is on, a flashing yellow LED shows self‑check status, and red LEDs display the status of each of the eight light beams.
After powering the unit, connect the red and brown wires of the five‑core cable within five seconds to select one of three alarm modes as described in the manual.