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Loop limit: 2 KΩ maximum at 48 VDC (nominal 20 mA minimum loop current)
DC resistance
Talk Mode: 300Ω typical
Monitor impedance:39kΩ nominal at 1 KHz
Rotary dial output
Pulsing rate:10pps+0.8pps
Percent break:61%±2%
Interdigit interval:1000 ms typical
Leakage during break:>50 kΩ
DTMF output
Tone frequency error: ±1.2% maximum
Tone level: -8±2dBm combined(typical)
High versus low tone difference:4 dB maximum
Memory dialing
Memory capacity:13 memories including M1, last number redialing
Digit capacity: 16 digits per memory
PBX pause duration: 4 seconds
Line voltage test :5 Phase AC/DC voltage indication (under24V,24~100V,101~150V, 151~200V,more than 200V)
Monitor amplifier power source: 9V transistor; provides 25 hours continuous use, typical
Power source Continuous use, typical
Automatic power shut off(Monitor type) After 5 min. of no audio signal
Speaker phone levels Electronically adjustable
Power source: Battery (9V) 6F22 (Not included)
Physical
Measurement; 230 ×82 × 89mm
(9-1/16” × 3-15/64” × 3-1/2”)
Weight 635g typical
Water resistance Dust protection & Waterproof tested to an IEC/EN 60529 IP54 rating
Cord sets Angled bed of nails and RJ11 plug
Environmental
Temperature Operating: 0 to 50°C
Storage:-10 to 60°C
Altitude To 10,000 feet (3,000M) max
Relative humidity 5 To 95%
