Master Clock Controller, Digital, 12 Hour, Shape Square, Width 6-3/8 In., Depth 3-1/2 In., Height 4-5/8 In., Digit Size 1/2 In., Power Source 110V, Mount Wall or Surface, Features Automatic time correction within 2 minutes of power restoration, Automatic daylight savings time adjustment, Battery backup, Schedules up to 300 events, Powers up to 8 bells and 20 horns, Case Material Plastic, Case Color Beige, Lens Material Polycarbonate, Connector Type RJ45, Interface Controller Synchronize your facility with the TimeTrax Sync(TM) 7000 Master Clock System. This master control device is able to synchronize up to 200 TimeTrax Sync(TM) Analog Wall Clocks (item# 1PB84) and/or Digital Wall Clocks (item# 1PB92). It powers up to 8 Pyramid Analog Clocks (No. 1PB84), available separately. You can integ.