24V DC Non-Fail Safe and Fail Safe Models Available For Use with PA100 Series Panics and DBR100 Series Deadbolts Used in Conjunction with ESK Series Stop/Strike These CRL Folger Adam 310-1 Electric Strikes are 24V DC. They are offered in a Non-Fail Safe Strike that unlocks only when energized, and a Fail Safe Strike that requires continuous power to stay locked. They are used in conjunction with an ESK Series Stop/Strike. These Strikes have a 3/4" (19 mm) straight latch bolt keeper. Face plates are not supplied. For application details please contact DK Hardware Sales. Important Notes: This Strike is Fail-Secure and is typically used only with our Panic Handles. Fail-Safe is available on special order only, and must be quoted by Technical Sales Department. The ES3101 is a 24V DC device. 12V DC and 120V AC are optional, and must be quoted by Technical Sales.