Wireless gap window/door sensor (Using in S-MDC-0210, S-MDC-0211, S-MDC- ... , S-MDC-0400, S-MDC-0401) Wireless gap window/door sensor (Using in S-MDC-0210, S-MDC-0211, S-MDC ... the moving distance (opening door) is more than 30mm, the indicator light (red) will turn on, and the signal will be ... 's artwork and logo MDC-0301 Wireless gap window/door sensor (Using in S-MDC-0210, S-MDC-0211, S-MDC ...