LLOYTRON MIP System 3 Doorbell Accessory - Wireless Bell Push Transmitter - Replacement or Additional Bell Push for MIP System Chime Receiver - 200m Range - B7831BK - Black. Lloytron MIP System 3 Bell Push Transmitter - Battery Operated and WeatherproofThe Lloytron MIP System 3 bell push transmitter is an accessory and will not work alone; it must be paired with an MIP System chime receiver or kit. It's ideal for those who have an existing MIP System in place and are looking to add an additional/replacement bell push or for those who are new to the MIP System and purchase this product along with any MIP chime receiver accessory (e.g. B7931, B7935). The bell push has a modern, sleek and simple design ideal for use indoor or outdoor with IP44 weather resistant rating. With a huge unobstructed wireless range of 200m the bell push is ideal for use in the home, outbuildings or the workplace. When the bell push is activated, a wireless signal is sent to the chime receiver which then sounds/flashes to alert you the bell push has been activated and someone is at the door. You can boost the range by purchasing and linking an MIP signal booster accessory. The bell push can be kept loose and portable or fixed in to place on your door frame using the adhesive pad or screws provided. Linking wirelessly to the chime receiver, there are no unattractive wires or damage to walls to install. Link up to 16 Different MIP Accessories to Create Your MIP System MIP System 3 is more than just a doorbell; with the ability to purchase and link up to 16 different accessories (bell push, chime receiver, magnetic sensor, PIR motion sensor, etc.) you can create the perfect alert system for your home or business. Select different melodies for different transmitter accessories with the flick of a switch. MIP System 3 is compatible with other MIP generations; however, this feature is unavailable when linking with MIP System 1. Box Includes:1 x IP44 weatherproof bell push transmitter1 x A23 12v battery for bell push Specifications: Dimensions: H:8.0 x W:2.1 x D:3.5 cm Colour: Black Guarantee:Statutory Only Model Number: B7831BK