Dimensions: Length 152mmX Width 163mmX Height 25mm Main chip: STC89C52RC (supports 51 single-chip microcomputer) Working voltage: DC 12V (24V is also available) 2. Features RS485 standard interface 16-channel output photoelectric isolation control relay. Standard 11.0592M crystal oscillator. (Easy to set the serial port baud rate) With power-on reset and manual reset. MODBUS_RTU standard protocol control with power-off storage function, the single-chip microcomputer is internally integrated. Output 16-channel relay LED indication. Software setting address and other parameters
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