Grundfos 599388 24 Hour Programmable Timer for UP Circulator Pumps<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Supply Voltage: 115-120V AC， 60-hertz</li><li>Contact Rating: 16-amp</li><li>Ambient Temperature: -4F to 175F</li><li>Shortest Switching Interval: 15 minute increment</li><li>Switch Modes:"Timer"， "ON" Override， "OFF" Override</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51YYpwju78L.jpg" noproxy>