This Birth Alarm set consists of the Transmitter (with battery) and Receiver only and assumes that you either already have the complete Anti-roll Girth and need spare items, or wish to create your own complete Birth Alarm Set.
To create your own complete Birth Alarm you will also need to acquire a girth of the correct size for your mare plus the separte 'Top Part of the Anti-roll Girth'
Please follow this link for information on the Complete Birth Alarm Foaling System Set.