Brand: contrec or equivalent accuracy: oiml r75 class 4 and en1434 display unit: kwh, mwh, mj, gj, therm, btu x1000, tons x hours(refrigeration) power supply: 12 - 24vdc, 100ma input: flow meter: pulse ; temperature: 4-wire pt100 rds to iec 751 output: pulse rs485 (modbus ru) 4-20ma(optional) relay: two solid state opto-isolated relays (high and low alarm) material: polycarbonate and abs protection: nema 4x (ip66) mounting: wall mount or panel mount.