![Keystone Technologies, Constant Wattage Emergency LED Battery Backup, 12 Watt Max, 90 Minute, Alternating Current, KT-EMRG-LED-12-1200-AC, Optimized for Keystone Single Ended Tubes, **2-in-1 Test Switch and Indicator LED Included** Keystone Technologies, Constant Wattage Emergency LED Battery Backup, 12 Watt Max, 90 Minute, Alternating Current, KT-EMRG-LED-12-1200-AC, Optimized for Keystone Single Ended Tubes, **2-in-1 Test Switch and Indicator LED Included**](https://cdn3.volusion.com/kpvxy.ezxkv/v/vspfiles/photos/KT-EMRG-LED-12-1200-AC-2.jpg)
Keystone Technologies, Constant Wattage Emergency LED Battery Backup, 12 Watt Max, 90 Minute, Alternating Current, KT-EMRG-LED-12-1200-AC, Optimized for Keystone Single Ended Tubes, **2-in-1 Test Switch and Indicator LED Included**
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