No more crawling around the valve box trying to program or troubleshoot a battery powered timer, the BL-KR timer puts full programming control in the palm of your hand. With 100% waterproof and rugged construction, the BL-KR is ideal for isolated sites and power-restricted areas. Programming is easy with a few taps on a smartphone or tablet through direct Bluetooth communication up to 32' (10 m) away from the valve box. Add multiple controllers (up to 200 timers) and program simply and quickly from 1 free application.