PNL303S six-zone LED main keyboard alarm controller is a smart home system product developed by our company, which has 6 zone access security alarm function and keyboard operation function.
The manual explains safety precautions, component identification, and the required tools for installing the PNL303S 6‑zone LED keypad alarm controller. It includes an unboxing checklist, model specifications, and wiring diagrams to help users correctly connect power, RS485 communication, and alarm inputs.
Detailed installation steps cover mounting the controller in a standard 120 mm switch box, selecting appropriate twisted‑pair cabling for the RS485 bus, configuring device addresses, and performing functional tests. The guide also lists common troubleshooting procedures, maintenance tips, and contact information for technical support. This manual is written in Chinese.
| Input voltage | 10‑14 VDC |
|---|---|
| Maximum input current | 200 mA |
| Communication interface | RS485 |
| Bus device limit | 64 devices |
| Maximum cable length | 1500 m |
| Transmission rate | 9600 bps |
| Electrical port standard | TIA/BEIA‑4835 |
Check that the +12 V power input on the bus interface is correctly connected.
Up to 64 devices can be connected to the RS485 bus.