Smartech offers GPS-enabled master system clock which is highly accurate as it acquires precise time through the GPS technology satellites. If there happens to be link failure with the the clock, Satellite signal continues to operate on its fundamental structure time clock. Master clock can control up to 32 slave clocks connected on rs 485 network. Features, Detachable weather proof antenna with a magnetic provision to mount it out door to expose to the open sky. Hh mm or minutes hours seconds clock format according to the customer requirement date display option 2, 4, 6, 8, 10 and 12 digit sizes day light visible clock also available master clock can control up to 32 slave clocks. Transmission distance up to 1200 m.