Proskit MT-8100 Butt Set (2KΩ@48VDC; IP54)

Electrical:

+ Loop limit: 2KΩ maximum at 48VDC (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: 4dB 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 (<24V, 24~100V, 101~150V, 151~200V, more than 200V)

+ Monitor amplifier: 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

                           Battery (9V) 6F22 (Not included)

+ Speaker phone levels: Electronically adjustable

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: 0~50°C

                         Storage: -10~60°C

+ Altitude: To 10,000 feet (3,000M) max

+ Relative humidity: 5~95%