Transmitter (Push Button): The smaller unit with a bell icon, placed outside your door.Receiver (Chime): The larger unit with a signal icon, placed inside your home.Battery: A small 12V alkaline battery (typically type 23A) included to power the transmitter.Typical Installation StepsPower the Units: Open the back of the transmitter and insert the included battery. Plug the receiver into a standard indoor wall outlet (or insert batteries if it is a battery-operated receiver model).Test the Range: Before mounting, press the transmitter button to ensure the indoor receiver chimes.Mount the Transmitter: Clean your exterior wall or doorframe, then secure the transmitter using the included double-sided adhesive tape or small screw