សៀវភៅណែនាំណែនាំអំពីការបម្រុងទុក LED ចេញ និងឧបករណ៍ផ្សំ
Battery Backup LED Exit and Unit Combo Product Specifications Product Name: Battery Backup LED Exit and Unit Combo Mounting: Surface mount or ceiling/left-side end mount Testing Requirements: Functional test every 30 days for a minimum of 30 seconds; annual test…