... ,high anti-interfernce. Modular structure output, high limit , low limit alarm signal output,4-20mA ,0-10mA transmittion output.RS232, RS485 communication ... Screen : four digits, 7 segments LEDModular Output : Relay High Limit Alarm, 220VAC/0.8A, NO. (220VAC/3A,NO)4-20mA ,0 ...