Samsung SmartThings Multipurpose Sensor We recommend placing the hub in an open area well away from other devices transmitting and receiving 2.4GHz signals (like WIFI routers). If the signal needs to penetrate walls or floors, we generally recommend sensors be placed within 30 ft of the hub, or that a device that can act like a ZigBee repeater (such as a SmartThings Outlet) be placed between the two devices to boost the range. Temperature - 32 to 104 degree F The versatile Multipurpose Sensor is an all-in-one sensor that can detect vibration, orientation and angle (tilt), temperature and when things open or close Monitor secure areas of your home and be alerted if a door, window, cabinet or drawer opens unexpectedly Get a reminder if you forgot to close your front door or garage door Know the temperature in any room or location Measurements (for combined sensor and magnet): 1.9 inches wide, 1.89 inches tall and 0.57 inches thick Additional Requirements: Samsung SmartThings Hub Range: 50-130 ft Communication Protocol: ZigBee. Refer to the Trouble Shooting Steps available below in product description.