Features: This product is an industrial standard analog signal acquisition module that supports 8-channel synchronous acquisition. Adopting RTU protocol with built-in power isolation, magnetic coupling isolation, self recovery fuses, and TVS protections circuits. Support setting device addresses (1-255) for cascading multiple device onboards voltage stabilizing chips through RS485 bus Supports 7-36V wide voltage power supply board mounted integrated power isolation, providing stable isolation voltage. The isolation end does not require additional power supply board mounted integrated magnetic coupling isolation, which can perform signal isolation, high reliability, strong anti-interference, board mounted self recovery and TVS (transient voltage suppression tube) It can effectively suppress voltage and transient voltage in the circuit, prevent overvoltage and overvoltage, protections and anti-static, with 12 bit high-precision acquisition and multiple input modes Supports single ended/differential input, supports simultaneous collections of voltage and current using high-precision resistors, precise operational amplifiers, more accurate data collections, built-in oversampling digital filtering algorithm, stable output without crashings, rail type housing design Easy installation, and safe to use. An external LED indicator light is installed for easy viewing of MCU status and signal transmission status Specifications: Material: Plastic Industrial 8CH Analog Acquisition Module Acquisition:12-bit High-precision Supports Voltage And Current Acquisition Types：8CH/8CH B Power Supply：DC7~36V Wide Voltage Protocol ： RTU Size:As Pictures Package Includes: 1Set 8CH Analog Acquisition Module note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you