This is a product user manual. The product name is TD433 series (PN: 10TD433, 10TD433PB and 10TD433PB9V) transmitter and RD433 (10RD433) receiver are a miniature pair, ideal for the opening of automatic doors. The transmitter is available in hand-held or pushplate style and transmits a unique rolling code each time the switch is closed to provide a secure door-opening signal. The transmitter is powered by either a 12-volt (type 23A) or a standard 9V battery and a red indicator lights when the transmitter is activated.