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Relay Switch Board, DC 5V RS485 RS232 (TTL) RTU Control Module U

$6

Relay Switch Board, DC 5V RS485 RS232 (TTL) RTU Control Module U

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Product description

Features:
1. Mode: Relay switch board supports MODBUS and AT commands, two command control modes
2. Delay Time: The maximum delay under the AT command is 9999 seconds, the maximum delay under the MODBUS command is 255 seconds, the AT command can be input through the serial port super terminal (serial assistant)
3. Support: The relay module can support up to 247 devices for parallel use of MODBUS command mode
4. Interface: RTU control relay module with RS485 and RS232 (TTL) dual bus interface
5. Attribute: AT relay PLC board output control pin 8, 5V TTL level, low level (default)/high level output

Specification:
Working voltage: DC 5V
Working current: 10-15mA
Size: 45*30*15
Weight: 12g

Package list:
1 * Module

Note:
The actual product color may deviate from the photo due to light.
There may be a slight deviation in the measurement of product.

Relay Switch Board, DC 5V RS485 RS232 (TTL) RTU Control Module U