Break-glass acoustic simulator - flex and shatter simulation
16m dual frequency; flex and shatter detection
3v battery (single) for the LEDRKP-WE
3v battery (double) for the DELTABELL-WE Mk 2
CR34615 D-Type for the DELTABELL-WE Mk 1
Lithium CR1/3N Button Cell for the KF4-WE Mk 3 coated