Professional quality laser instrument for fast and accurate measurement of rotational speed with or without contact. Will also measure total revolutions, frequency, surface speed and distance. Ten selectable data set memories each with maximum, minimum...

Allows discreet monitoring of door/window openings and closures. Easily pairs with Yale Sync Smart Home Alarm and mountable on any door or window frame. Features a 200m wire-free range and a battery life of up to 2 years. Sends low battery notifications...

Allows for discreet monitoring of doors, gates, entries and exits. Suitable for domestic or commercial properties with a long battery life. Features a highly extensive and reliable communication range. Mountable on metal surfaces. Contact has a powerful...