Overview Monitor indoor and outdoor temperatures with this self standing desk monitor (can also be wall mounted). The easy to read screen lights up at a touch providing a quick snapshot of conditions including temperature, humidity and comfort levels. Plus up/down trend indicators. Clock and calendar also provided. Requires 2xAAA batteries in base station and 2xAA batteries in remote sensor. Range 60m open air. Features Temperature and humidity measurement for indoor and remote sensor locations. Perpetual calendar. Comfort indicator. Trend arrows. Clock with alarm and snooze function. 60m open air range for external sensor. Great for monitoring cool rooms, patio areas, wine storage and more. 433.92MHz wireless. Easy to read screen with touch activated backlighting. Specifications Time: 12/24 hour format. Perpetual Calendar: January 1, 2000 to December 31, 2099 Daily Alarm Function: Yes. Snooze function: OFF or 5~60min Low battery indication: Yes Temperature/Humidity Indoor temperature measurement ranges: -9.9°C to 50°C Indoor/outdoor humidity measurement ranges: 20%RH to 95%RH Outdoor temperature measurement ranges: -40°C to 70°C Temperature units in ? or ?. Indoor/ Outdoor temperature trend Maximum /minimum value record of temperature and clear data. Wireless Outdoor Sensor Wall mount or desk standing 433.92MHz RF transmitting frequency 60 metre transmission range in an open area General Backlight: 10 seconds Power Supply: 2 x AAA, 2 x AA batteries (not included) Size: 89 x 89 x 25mm (base station), 50 x 96 x 32mm (sensor) *Specifications are subject to change without notice.