Telephone Billing Meter for Callshop Calculator-TBM502

Telephone Billing Meter for Callshop Calculator-TBM502 Description:

Telephone Billing Meter for Callshop Calculator-TBM502 Features:Large LCD display with bright backlight Multiple tariff rates could be set, such as rate for international calls, national calls, local calls, specialism, free and forbidden calls. Signal for billing startup: polar-reverse, 12/16Khz pulse, manual or delay automatically. Identify call number automatically and the tolerance is less than 1 second. Can trace the last 1000 records of telephone number, duration, total sum. Accumulate daily total sum and the grand total amount for the last 32-days automatically With built-in modem, support center network management, like tariff rates download and phone bills upload. Anti-lightning and anti-jamming design makes steady performance Built-in rechargeable batteries, it can work at least 8 hours after power cut down Remote 3-line character LCD display box for option. Function of printing phone bill for option Technical Index:Atmospheric pressure: 86KPa - 106KPa Relative humidity: 10% - 90% Noise: <60dB Temperature: -10°C - 40°C Timing accuracy: <1 sec DTMF receiving standard: ≥-23dBm Incoming receiving accuracy: >99.99% Insertion loss: ≤0.5dB Dialing method: DTMF Access: PSTN Power: AC 220V, 50/60Hz, DC 9V, 550mAh