Waveshare Industrial Modbus RTU I/O Module, Multiple Isolation Protection, Support Voltage & Current Acquisition, Rail-Mount PC Flame-Retardant Protective Case, DC 7V ~ 36V Wide Voltage Power Supply

Supports 7V ~ 36V wide voltage power supply, configurable device address (1 ~ 255), multi devices can be cascaded on RS485 bus. Supports power isolation and magnetical isolation, enabling power and signal dual isolation for communication, with high reliability and strong anti-interference capability
Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & ESD protection
Supports passive and active digital input, with bi-directional optocoupler isolation, built-in debouncing algorithm. The relays support digital input linkage control or toggle control
Supports 12-bit high-precision acquisition with multiple range input modes, supports single-ended/differential input, supports voltage and current simultaneous acquisition. Adopts high-precision resistors and zero-drift high-precision operational amplifier for more accurate data output or acquisition
High quality relay, contact rating: 10A 250V AC or 10A 30V DC. Rail-mount PC flame-retardant case design, easy to install and safer to use. 3 × LEDs for indicating the MCU status and signal transceiving status