Multifunction expandable digital controller for heating systems with remote control, with 4-20mA input-MASTER (EV87)

General Features: Graphical display with 4 lines; Software class A; RS232 output for modem connection; Data storage period: 5 years; 6-module DIN housing; Two weekly programs with three time bands per day; A daily program with three time bands; Clock charge lifetime: 5 years; Measurement range of external probe: -30..+40°C; Measurement range of delivery/limit/auxiliary probe: 0..+99°C; Maximum 20 slaves can be connected.

Electric Features: Power supply: 230Vac; Consumption: 5 VA; 4 output relays: mixing valve and pump, boiler with multistage burner (from 2 to 4), boilers in cascade (2 to 4) with choice of main boiler rotation, 2 cascade boilers with two-stage burner with choice of main boiler rotation; 2 digital inputs can be used as alarms; 1 4..20mA input can also be used to drive the configurable relay; 1 output 0..10V (3mA maximum load) with proportional regulation; 1 configurable relay (auxiliary probe – 4..20mA sensor); Contacts rating: 5A – 250Vca (resistive load).