... Detect states of solar cell modules, the current of photocell, the state of Surge Protection Devices RS485(Modbus) 1. General AGF ... cell modules, the current of photocell, the state of Surge Protection Devices, the state of DC breaker and outputing contact signal ... inputs to get the states of DC breaker and surge protection device;3. With the interface with air velocity transducer, temperature sensor, ...