VENSTAR P374-0433 COMFORT CALL BASE STATION AND WIRELESS MODULE
COMFORT CALL BASE STATION AND WIRELESS MODULE, FEATURES:SIMPLE CONTROL OF THERMOSTAT BY PHONE, CELL PHONE COMPATIBLE, VOICE RECOGNITION, ANNOUNCES TEMP AND STATUS, CAN CONTROL UP TO 4 THERMOSTATS, COMPATIBLE WITH:P374-1700, P374-1800, P374-1900, P374-2700, P374-2800, P374-2900, COLOR:WHITE, WEIGHT:14 OZ, DIMS:3-1/4"L X 4-3/4"W, CORD LENGTH:70"