This Intermatic Low Voltage 121-Watt Power-Pack will help you create the outdoor lighting system you want. It comes with two sets of trippers to give you different times to have your lights on. The power-Pack is certified for safe operation and long life. Keyhole mountings are featured for ease of operation and installation.2-On/off setting per day121-Watt power-Pack to allow versatility of usageSafe operationLong lifeKey hole mountings are featured for ease of operation