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53
®
4550-CF
SPECIFICATIONS (cont.)
Phone Line Monitor
On-Hook voltage
8 - 50 VDC
Off-Hook current
≥ 10.0 mA
Power
AC Supply
16 V 40VA
Normal Current (On Hook)
125 mA
Maximum Current (Off Hook)
600 mA
Battery standby current
20 mA
Battery
12V, 5.0 AH
Battery Charging System
Pulsed width modulated constant voltage.
Electronic short circuit protection, Thermal
protection
Maximum Battery charging
current
789 mA for 5.0aH battery
Maximum full charge DC voltage 13.6V +/- 0.2V
Maximum Ripple
20mV
Battery Operating Temperature
Range
-20° to +50° C
Radio
Frequencies
850/1900 MHz
Avg. Transmit Current
290 mA
Peak Current
2 A
DC Voltage
3.3- 4.2 V D.C.
Sensitivity
-109 dB (typical)
(SPECIFICATIONS continued next page)