The Sangamo Powersaver Plus Electronic 24/7 Boost controller with programmable operations. Sangamo are a UK manufacturer of time clocks/heating controls, thermostats, immersion controllers & programmers. The brand is also recognised for their Round Pattern Time Switches. PSPS - 16A Powersave Plus Boost Controller. 24 Hour, 5/2 Day & 7 Day Cycles. 10 On/Off Programs per Day. 15 mins, 30 mins, 1 Hour, 2 Hour, 4 Hour, and 6 Hour Boost Function. Clear Indication Display. Button lock feature. Summer / Winter time Change. Single Gang Surface (Mount Box Included) or Flush Mounting. 16A Switch Rating 240vAC. Boosts: 15 Mins, 30 Mins, 1 Hour, 2 Hours, 4 Hours & 6 Hour. Ingress Protection: IP20. Temperature Rating: T40. Fixing: Surface and Flush Mounting. Operating Temperature: 0°C to 40°. Material: ABS. Dimensions: 86mm x 86mm x 35mm (9mm D without Black Box)