求助电话机 KNZD-60M

VoIPSIPPoE

主要特点： IP双向视频电话 高清屏幕 精致耐划的机身 支持 SIP servers SIP 2.0 支持TR069 7" digital TFT-LCD of 1024 x 600 pixels with Visual angle adjustable display screen sensor camera with 5Mega pixels 2xLAN, 支持PoE, USB 支持两组速拨紧急求助 防水等级可达到IP65 扬声器/喇叭：8 ohm 1.5W, loudness 85dB(A) to 65dB(A) MIC’s working distance 80cm 响铃: >95dB. Coverage 1.5m radius 指示灯来电提醒，通话常亮 With induction loop coverage 1M radius. 为盲人提供更便捷的求助 HD voice with high quality headset/HD voice in speakerphone mode TFT 特征 语音编码： G.711a/u, G.7231 high/low, G.729a/b, G.722, G.726, iLBC, AMR-NB; AMR-WB Video codecs:H.263, H264, MPEG4 分辨率: QCIF,CIF,QVGA 图像格式: PEG GIF and BMP PNG Video formats: MP4, 3 GP and FLV 支持双工对讲 支持STUN 支持SIP SMS 对比度 1000 : 1 亮度 : 450cd/m² 视角 : 178 degrees horizontal / 178 degrees vertical (at contrast ratio of 10:1) 摄像头规格： Active array size:2592 x 1944 镜头尺寸: 1/4” Lens chief ray angle: 24 Input clock frequency: 6~27 MHz Maximum Image transfer rate: QSXGA (2592 X 1944): 15fps 1080p: 30 FPS 1280X960: 45 FPS 720P: 60 FPS VGA(640X480): 90fps QVGA(320X240): 120 fps 灵敏度: 600 mV/lux-sec Shutter: rolling shutter/frame exposure Maximum exposure interval: 1964 xTROW 像素: 1.4 um X 1.4 um Dark Current: 8 mV/s @ 60℃ junction temperature I图像区域:3673.6 um X 2738.4 um viewing angle of 96º x 52º (H x V) 内置老人机： With induction loop coverage 1M radius. 电压: 12v d.c 最大操作电流: 3A 输入: internal electret microphone, suitable line level/second microphone Microphone: sensitivity: 66Dbm to -2dbm Bandwidth 50Hz to 20Khz Overail Performance: bandwidth at any output level 50hz to 15khz Distortion:90db Noise:84DB Coverage(internal loop)1m radius Input level control Mic:-40+40db 输出电流：0.8ARMS @1KHZ 3.0apeak 质量保证