Storage Heater Controls

storage heater
An electric heater that accumulates heat in water or bricks during the night (when electricity is cheaper) and releases it during the day
A storage heater is an electrical home appliance which stores thermal energy during the evening, or at night when base load electricity is available at lower cost, and releases the heat during the day as required.

controls
The restriction of an activity, tendency, or phenomenon
(control) a relation of constraint of one entity (thing or person or group) by another; "measures for the control of disease"; "they instituted controls over drinking on campus"
(control) power to direct or determine; "under control"
exercise authoritative control or power over; "control the budget"; "Command the military forces"
The ability to manage a machine or other moving object
The power to influence or direct people's behavior or the course of events