Belimo EV050+AKRX-E : 2-Way 1/2" Energy PICCV Valve, 6.6 GPM, NPT Female Ends, Electrical Fail-Safe Actuator, 24 VAC/DC, BACnet IP, BACnet MS/TP, Modbus RTU, Modbus TCP, MP-Bus, 90 Second Run Time, <35 Second Fail-Safe, NEMA 1 (IP54) Enclosure, 5-Year Warranty (Configurable)