• Microprocessor master clock, fitted with external radio transmitter for wireless communication with unlimited analogue and digital radio slave clocks of series BTWL
• Wiring with control cables not necessary!
• Automatic adjustment of master clock time at installation
• Automatic adjustment of the wireless clock system after mains failure
• Automatic summer/winter time changes
• Code-protected keypad
• Checking-LED’s for power supply (green) and alarm (red)
• Radio transmitter for unlimited quantity of radio slave clocks inside reception area
• Power supply of radio transmitter via master clock
• Safety in operation through coded time telegram; thus no interferences with other systems
• 4 different, coded channels for avoiding interferences of several wireless clock systems
• In case of no radio signal the slave clocks are running with their quartz time base without interruption (max. 24 hours)
• 2-lined LCD display for indication of hours, minutes, seconds and date respectively menu guide in program mode (2x 24 characters)
• Traditional impulse output 0.5 A for control of hard-wired slave clocks via 24 V DC minutes-, ½minutes- or seconds impulses (connection of up to 45 impulse slave clocks)
• Slave clock output short-circuit-proof and overload protected
• Alarm relay

Technical specifications:

• Master Clock:
• Case: ABS plastic (shock-proof) for wall mounting, IP41
• Accuracy quartz: TCXO, ±0,1 s/ 24 h at 20…25 °C (wi thout DCF/GPS)
• Power supply: 230 V AC ±10%, 50/60 Hz, 25 W
• Ambient temperature: 0…50 °C
• Dimensions (WxHxD): 220 x 322 x 83 mm
• Weight: 1.1 kg
• Radio transmitter:
• Case: ABS plastic for wall mounting with 2 screws
• Transmitter frequency: 869.525 MHz
• Transmitter power: 25, 125 and 500 mW adjustable (via master clock)
• Transmission range: Indoors 100…200 m depending on ambient conditions (for major ranges up to 3 signal amplifiers BTWL-HUV per direction can be used)
• Power supply: 12…24 V AC/DC via master clock
• Power consumption: 5 W
• Protection class: IP 54
• Dimensions (WxHxD): approx. 80 x 80 x 45 mm
• Weight: approx. 150 g

Options:

• BT-DCF-ANT: DCF-77 radio synchronisation antenna
• GPS-ANT-BT: GPS synchronisation antenna
• BTWL-HUV: External signal amplifier