W2004T 4-строчный китайский пейджер

W2004T (4 Line/2 Line Chinese Pager)SPECIFICATIONSVersion 1.0Frequency Range 138-174, 278-284, 405-480, 928-932MHz Bands Channel Spacing 25KHz Signal Format Pocsag Data Transmission Rate 512bps or 1200bps or 2400bps Modulation System Carrier frequency shift keying (NRZ) Frequency Deviation ±4.5KHz Receiving Sensitivity 512bps 5uV/m, 1200bps 7uV/m, 2400bps 10uV/m Selectivity 60dB ±25KHz Image rejection >50dB (138—480MHz);>40dB (928—932MHz) Spurious Rejection >60dB (138—284MHz); >50dB (405—932MHz) Frequency Stability ±10ppm(138-284 MHz), ±5ppm(406-480 MHz), ±3ppm(928-932MHz) Tone Alert Output More than 75dB(SPL) 10cm, frequency 2731Hz Operating Voltage 1.0V (min) Operating Temp. Humidity -10°C to 40°C, 95% (at 40°C) Storing Temp. Humidity -10°C to 70°C, 95% (at 40°C) FEATURESMessage storage Capacity 19 Personal messages, 12 Mail drop message Address Code 4 paging addresses Display Format 20 chars. x 4 lines + 1 line ICONS, or 20 chars x2 line+1line icon, user selectable Time/Date Display Real time with date displayed in 24 or 12 hours format In Range Indication If pager is within range of reception, " " will not be displayed Low Voltage Alert Display will show " " indicating low voltage Backlight Backlight can be turned on manually under dim environment Message Received Time Message receiving time is memorized and displayed together Message protection 16 messages Melody Alert 8 Musical Tones Tone Alert 4 different tone alerts, continuous audible alert (ccp selected) Tone Alert Time 12 16 seconds Vibration Alert Build-in vibrator will be activated automatically to indicate receptions of calls Silent Alert Pager can receive message without vibration, tone alert Alarm Built-in alarm function at preset time Language Chinese Battery One "AA" battery (1.5V) Battery Life 512dps, 2000 Hours (Alkaline battery), 1200bps, 1600 Hours (Alkaline battery) Battery Back-up 15 seconds (when the battery is replaced) Weight 135 gms. (including battery) Size 80.0x54.5x20.5 mm (without holster)