LM Latchbolt Monitoring
The LM feature is used to signal the use of an opening. This device is equipped with one internal SPDT switch which monitors the latchbolt.
Jean Wu
DE 延遲逃生裝置
The Delayed Egress Exit Device provides a controlled egress for openings which require panic or fire exit hardware for safe egress.
31 / F31 平推型逃生門鎖(RIM)
31 / F31 Rim Exit Devices (RIM) are designed for new or retrofit installation into other manufacturers' devices.