phone billing meter 4 lines

Functions: With large LCD screen. Realize managed by center network management system. Comply to technology requirements and testing means for Multi-ports meter promulgated Ministry of information industry. Can be input many kinds of tariff rate, such as rates of international, internal, local, specialism, free and forbidden call 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. Total automatically daily subtotal sum and the last 32-day grandtotal amount. With inner modem, supporting the function of network center manage, tariff rate download and phone bill upload. Anti- lightning, anti-jamming design and the steady performance. With rechargeable batteries, It can work 8 hours at least after power cut. Remote display box for option function of printing phone bill for option. Conditions: 1) Environment: Away from rain, sun, high temperature, dust, alkali, acid, strong vibration situation or strong electromagnetic wave 2) Atmospheric pressure: 86KPa - 106KPa 3) Relative humidity: 10% - 90% 4) Noise: <60dB 5) Temperature: -10º C- 40º CTechnology standards: 1) Timing accuracy: <1 sec 2) DTMF receiving standard: ≥-23dBm 3) Incoming receiving accuracy: >99.99% 4) Insertion loss: ≤0.5dB Specifications: 1) Height: 15mm 2) Width: 70mm 3) Depth: 255mm 4) Weight: 0.95kg 5) Display operator: Character LCD with backlight 6) Customer: 3-line character LCD with backlight 7) Keyboard: Six function keys 8) Dialing method: DTMF 9) Access: PSTN 10) Power: AC 220V, 50/60Hz, DC 9V, 5, 504mAh 11) Battery: Fully charged battery supports 16h calling