STI - 6518 - Bopper Stopper - Protective Cover - Polycarbonate - Clear SDC the Red 1 controller allows

the Red 1 controller allows you to scale the system to just the right size

Automotive Locksmithing 101 - Complete Decoding

whereas the RCI 9323 is two separate components with a reader and controller

UL Fire rating for 20 minutes

Aside of its small size and ease of use

STI - 6518 - Bopper Stopper - Protective Cover - Polycarbonate - Clear SDC the Red 1 controller allowsThe highly durable Bopper Stopper helps protect against vandalism and false activation, with hinged covers live up to their name and can be used in a wide range of applications. Bopper Stopper can take hard knocks in stride while protecting digital keypads, electrical outlets, smaller size pull stations, biometrics, volume or lighting controls and push buttons to name a few. The covers and hinges are molded of super tough polycarbonate material.