MD93 Digital Clock/USB Charger 2.1 Amps

Part No: 6420093-1

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MD93 Digital Clock/USB Charger 2.1 Amps

  • Compact 2-inch size ­fits standard panel cutout
  • Six-digit, seven-segment LED clock and USB charger
  • Four modes: local time, universal time, flight timer and stopwatch
  • Clock settings include 12– or 24–hour mode and seconds On or Off
  • Multiple lighting schemes allows manual or automatic dimming
  • 8-year internal battery maintains time and flight timer memory when not powered by the aircraft
  • USB interface provides 2.1 amps per charging port
  • Compatible with Apple and other USB devices
  • Protects itself and the charging device from short circuit, power surges and over-current potential
  • Designed and built in Wichita, Kansas, USA
  • One-year limited warranty
The CH93 series, part numbers 6420093-( ), is a multi-function digital clock / chronometer / voltmeter / temperature unit with multiple options for USB Charging Ports. The unit fits into a standard, rear-mounted, 2-¼” avionics panel cutout. Power is drawn from the aircraft main bus to light a white, six digit, seven segment LED clock. The clock can display several different modes: local time, universal time, flight timers, elapsed and countdown timers and optionally, bus voltage and up to two temperature inputs. The CH93 display is daylight readable with two methods of brightness control. It can be controlled automatically using the internal photocell or manually with an external dimming bus voltage. The CH93 clock has an internal battery to maintain clock time and flight timer memory when the aircraft is not in use.

The USB Charging Ports are designed as DCPs (Dedicated Charging Ports) to industry-standard protocol per the USB Battery Charging 1.2 Compliance Plan. Some models also comply with the higher power requirements of USB Power Delivery 2.0 and 3.0. Early-generation or smaller consumer electronics typically accept one (1.0) amp during charging. However, newer electronics, such as tablets and larger devices can accept, and in some cases, require up to 3 amps to charge and operate.
Power Input
10–32 VDC; 36 W maximum
2.6A @ 14 VDC; 1.3A @ 28 VDC

USB Power Output
5.0 ± 0.25 VDC; 15 W, 3.0A per port

Clock Accuracy
±0.5 seconds in 24 hours, ± 3 minutes per year

5.0 oz (0.3 lbs)

Local Time, UTC / Zulu Time, Flight Timer, Countdown Timer, Stopwatch, Volts, OAT, Secondary Air Temp

Operating Temp
-40ºC to 70ºC (-40ºF to 158ºF)

55,000 feet

Rear-panel mounted, (4) #6 screws

2.39 x 2.39 x 1.22 inches

Connector Kit
MCIA P/N 9018178-1

USB Interface
Dual USB-A

Anodized aluminum black

FAA TSO certified to C71
EASA ETSO certified to C71
RTCA DO-160G qualified
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