Wireless signal from weatherproof remote sensor broadcasts temperature measurements up to 100 feet in an open area. Each set consists of a main unit/receiver and a remote module. A total of three modules may be used with the main receiver. The receiver displays data from all three transmitting modules along with temperature trends. Display MIN/MAX values at the touch of a button. Alarm sounds when temperature exceeds or falls below limits on any channel. Alarm sounds for one minute or until muted or disabled. °F or °C selectable. Supplied with Velcro® and bracket for wall mounting or has a flip-out stand for tabletop use.