RS485 Multi-Channel Electric Lock Control Board SY-800R
RS485 Multi-Channel Electric Lock Control Board SY-800R
RS485 Multi-Channel Electric Lock Control Board (Model SY-800R)
Take full control of your smart storage cabinets, express delivery lockers, vending machines, and automated dispensing systems with the SY-800R RS485 Electric Lock Control Board. Designed for developers and integrators, this versatile controller supports 8 to 50 channels per board and can cascade up to 31 boards on a single RS485 bus — giving you the scalability to manage hundreds of electric locks from a single host system.
Key Features
- Wide Voltage Input: DC 12V–24V for flexible deployment in diverse hardware environments.
- High Output Current: Up to 6A maximum output per board — compatible with most standard electric locks.
- RS485 & TTL Communication: Reliable RS485 serial communication (baud rate 9600 default; configurable to 19200, 38400, 57600, or 115200). TTL interface also available. RS232 or USB connection requires a separately purchased converter.
- Hex Command Protocol: Simple hexadecimal (Hex) command set with BCC (XOR) checksum — easy to integrate into any existing host software or PLC.
- Cascade Up to 31 Boards: Connect multiple control boards in series via the dedicated cascade interface, scaling from 8 to hundreds of lock channels.
- Secondary Development Ready: Full communication protocol documentation provided — ideal for OEM and custom software integration.
- Configurable Lock Modes: Default normally-open output; contact us to configure normally-closed (power-on locking) output.
- DIP Switch Address Setting: Onboard DIP switches set board addresses 1–31 with ease.
- LED Light Control Interface (50-ch board): Supports lighting triggered by lock open or lock closed state feedback.
Available Channel Configurations
| Model | Channels | Input Voltage | Max Output | Communication | Board Size |
|---|---|---|---|---|---|
| SY-800R 8-CH | 8 | DC 12V–24V | 6A | RS485 / TTL | 95 × 90 mm |
| SY-800R 18-CH | 18 | DC 12V–24V | 6A | RS485 / TTL | 172 × 88 mm |
| SY-800R 24-CH | 24 | DC 12V–24V | 6A | RS485 / TTL | 214 × 88 mm |
| SY-800R 50-CH | 50 | DC 12V–24V | 6A | RS485 / TTL | 219 × 127 mm |
Board Interface Overview
- Power and communication interface
- Control board cascade interface
- CH1–CH8 electric lock connection ports (XH2.54 terminal type)
- Full-open button
- Board address DIP switch
- TTL communication interface
Pin Definitions
1. +12V | 2. GND | 3. 485A(+) | 4. 485GND | 5. 485B(−)
6. Positive Output(+) | 7. Negative Output(−) | 8. Feedback Input | 9. Feedback Common
10. VCC | 11. RXD | 12. TXD | 13. GND
Communication Protocol Summary
The SY-800R uses a straightforward 5-byte hexadecimal command frame: [Header] [Board Address] [Lock Address] [Function Code] [BCC Checksum]. Key commands include:
-
Full Open (all locks on board):
8A 01 00 11 9A -
Single Lock Open (e.g., Channel 1):
8A 01 01 11 9B -
Query Single Lock Status:
80 01 01 33 B3 -
Query All Lock Statuses:
80 01 00 33 B2 -
Multi-Channel Unlock (e.g., Ch 2, 10, 18):
90 01 02 02 02 93
The BCC check code is calculated using XOR (exclusive OR) of all preceding bytes. Full protocol documentation including active feedback, long power-on mode, and baud rate modification commands is available upon request.
What's in the Box
- RS485 control board × 1
- Power & communication cable × 1
- 1.6 m electric lock cable
- RS232 converter and USB serial cable sold separately
Made in Mainland China.
For technical reference on serial communication standards, see the NIST Communications Technology Laboratory.
Frequently Asked Questions
Q: How many electric locks can the SY-800R RS485 control board manage in total?
A: A single board supports 8 to 50 channels depending on the variant selected. By daisy-chaining up to 31 boards via the cascade interface on the same RS485 bus, the system can control up to 31 × 50 = 1,550 electric locks from a single host computer connection.
Q: Does the RS485 control board work with both normally-open and normally-closed electric locks?
A: Yes. The default configuration outputs a normally-open signal suitable for power-on unlocking electric locks. If you need to control a normally-closed (power-on locking) electric lock, please contact us to configure the board accordingly — no additional hardware is required, only a firmware setting change.
Q: Can I connect the SY-800R to a PC via USB or RS232?
A: The board communicates natively via RS485. To connect to a PC USB port or RS232 serial port, you will need a separate RS485-to-USB or RS485-to-RS232 converter (sold separately). Wire 485A to the converter's R+ and 485B to R−; the remaining converter pins are not required.
Q: What software or programming language can I use to control the SY-800R?
A: Any software or programming language capable of sending hexadecimal serial data over RS485 (or via a converter) is compatible — including Python, C/C++, Java, LabVIEW, and most PLC environments. We provide secondary development protocol documentation so you can integrate control into your own application quickly.
Q: What is the default baud rate, and can it be changed?
A: The default baud rate is 9600 bps (8 data bits, 1 stop bit, no flow control). It can be modified via command to 19200, 38400, 57600, or 115200 bps to suit your system's communication requirements.