an arrangement for displaying the state of a plurality of animal traps is disclosed . each trap senses the position of a movable trapping portion such as a trap door or jaw and rf transmits the state of the movable portion . a display unit receives the rf transmissions from the traps and identifies and displays the then current state of each trap . the rf signals may be periodically sent from the traps and / or they may be sent in response to a change in state of the movable portion .