This Intermatic WH40 water heater timer is a heavy-duty switch that is perfect for interior use. It has a digital control style and is compatible with Amazon Alexa and universal smart home systems. The timer is made of stainless steel, plastic, and metal materials and has a square box shape. With a maximum amperage of 40 A and a current rating of 40 A, this timer is suitable for electronics and electrical switches and dimmers. It has a timer feature and is designed with 2 poles, and its voltage is 240 V. This water heater timer is 5in. in length, 4.25in. in height, and 3in. in width. It has one gang and one throw, and its interruption type is a switch. This item is perfect for anyone looking for a durable and reliable timer that is compatible with smart home systems.