The Tower Optimum OP-SBST SBSTU Socket Box Timer is a 24-hour timer that can be used to control the usage of a particular socket. It is a corded electric timer that can be mounted on a surface. The timer is made of plastic and comes in a white colour. It features an analog/mechanical control style and a voltage of 230V. The thermostat shape is square and the timer is programmable. The model number of the timer is OP-SBST and it has a range of features including timer and hour timeswitch.