Product name: Phone Billing Meter WT-BM500(4LCD)

Billing start-up mode: 12/16KHz pulse or polarity reverse for option

1) Monthly Sta.: The last 32 days
2) Call record stored: 600(150/port)
3) Screen: LCD
4) Work time by battery: 8 hrs
5) Max. Sum: $7993000.00/call
6) Max. Quantity of tariff rate input: 800 pcs

Optional function
A) Center management
B) rechargeable battery
C) background light in screen

Accessories:
A)4 pcs of 5-meter and 2-core 6P2C phone wire
B) A manual instruction
C) An adapter 9V 550mA
Parameter (Can be revised according to actual demands).

Use condition:
Environment: Be away from rain, sun, high temperature, dust, alkali, acid, strong vibration situation or strong electromagnetic wave.
Atmospheric pressure: 86kPa-106kPa
Relative Humidity: 10%-90%
Noises <60dB
Temperature: -10 -40 centigrade degree

Technology Standard
Timing accuracy: Reversed Polarity Signal timing accuracy less than 1 second.
DTMF receiving standard: ≥-23dBm
Incoming receiving accuracy: >99.99%
Insertion loss: ≤0.5dB