... RS485 interface AGF Series, Detect states of solar cell modules, the current of photocell, the state of Surge Protection Devices RS485(Modbus) ... detecting the states of solar cell modules, the current of photocell, the state of Surge Protection Devices, the state of DC breaker and ... to power external sensors;5. Local LED displays the current of each input channel, turning off automatically;6. Option 2 ...