Block Sense Relay BSR-3 O scale (1:48) Block Detector (Lionel, MTH, Gargraves). The BSR-3 or BSR-1 provides superior block detection via the "insulated" rail method on any 3 rail track for any track side accessory. These boards are hand assembled and made in USA. 

Block Sense Relay

The Block Sense Relay (BSR), when used in conjunction with an insulated rail section, is designed to drive any operating trackside accessory, postwar trains, and more!


What’s in the Box:

  • (1) BSR Board

  • (2) Plastic standoffs

  • (2) Phillips screws for mounting

Note: The standoffs and screws allow the BSR Board to be mounted directly underneath the table top, control panel, benchwork, etc.


Features:

  • 16 amp rated relay-BSR-1 / 10 amp relay BSR-3 

  • Non-bouncing relay contacts  (eliminates relay "chatter" from poor connections due to dirty wheels, track, etc.) 

  • Compact easy-mounting board

  • DCS compatible

  • Screw terminal connections (14-22AWG) 

  • 9 to 25VAC operation.


This listing is for the BSR-3. Please visit my other listings for the BSR-1 / BSR-2 models