The ESE ES-962UP (12 hour) is a stand-alone clock for applications not requiring GPS or temperature controlled stability. The ES-962U/964U uses the AC line-frequency as a time reference or, optionally, a quartz crystal timebase may be specified. Set, Select and Date controls are accessible on the top of the case (or on the front panel when the Rack Mount option is ordered).
The P Option includes 19" Front Panel (Rack Mount): Designed for mounting into a standard equipment rack. Panel is 1/8" black anodized Aluminum and chassis is 5" - 10" deep.