This product is an industrial standard analog output product, supporting 0-20mA, 0-5V, 0-10V range 2-channel output. The application layer adopts the standard ModBus-RTU protocol, which conforms to the industrial standards and is suitable for various industrial occasions and automation systems. It is convenient to communicate with the host computer, and can realize fast networking and build monitoring system. Suitable for various industrial applications and automation systems. Functional features: 1, support 2 current type and voltage type analog output, each output type is optional 2, 12-bit resolution, 0.1% accuracy ADC 3, support standard ModBus-RTU communication protocol 4, communication operation indicator light, anti-crash guard dog 5, with lightning protection, electrostatic protection RS485 communication interface, operation amplifier signal isolation 6, the address, baud rate can be set by the upper computer software 7, anti-reverse connection, over-voltage protection, over-current protection, short circuit protection _x000D_ _x000D_ _x000D_