Call-Hear ® System Technical Specification

CH-105 

  • Communication frequency band:?ISM 433.92MHz
  • Build in PCB antenna
  • ASK (Amplitude Shift Keying) demodulation
  • Maximum Input RF Power:  -20dBm
  • AGC dynamic range:  RFIN @ -40dBm, 1.15V; RFIN @ -100dBm, 1.7V
  • Receiver sensitivity :  -106dBm, 1kbps and BER 10E-02
  • Communication range:  indoor >30 meters, outdoor approx. 60 m (open area)
  • Standby mode current:  <=40uA
  • Maximum operating current:  <600mA
  • Build in D-class audio amplifier
  • Doorbell Sound Pressure Level :  >90dBSPL @ 1 Meter
  • Audio total harmonics distortion:  <=10%
  • Maximum speaker output power:  <=1.7W
  • Build in 3 doorbell melodies
  • 4 alarm options: Off, Flash + Alarm, Flash + Shaker, Alarm + Shaker  
  • Volume rotary control with power ON/OFF switch
  • Super bright camera flash LED indicator
  • Low battery LED indicator
  • Remote alarm LED indicator
  • Paired /Testing button
  • Standard DC power socket
  • 4xAA Battery Compartment
  • Battery lifetime standby(with intelligent battery save function) > 6months
  • Operational temperature range:  -20 o C to 55 o C
  • Storage temperature range:  -30o C to 70 o C
  • Relative air humidity:  25 to 75%
  • Size:  140mmx125mmx65mm
  • Weight:  270g
  • At max RF transmission, the power output is 0dBm (equivalent to 1mWatt)

 

CH-100 

  • RF transmitter frequency band:  ISM 433.92Mhz
  • Modulation mode:  Amplitude Shift Keying
  • TX Transmitter Frequency Accuracy:  ±120KHz
  • Phase Noise: >60dBC at 10KHz
  • Radiated spurious emission: <-36dBm
  • Transmitting power: < 0dBm 
  • Quiescent current:  0
  • Operating current: <25mA
  • Transmitter LED indicator
  • Transmitting range: >30 metres indoor ,outdoor > 70 metres (with CH105)
  • Reed switch and membrane switch combine version
  • Coupler triggers to transmit RF Signal by back side
  • Battery requirement: 1 × 23A 12V Alkaline battery
  • Battery lifetime up to 1 year
  • Waterproof
  • Operational temperature range:  -20 o C to 55 o C
  • Storage temperature range:  -30 o C to 70 o C
  • Relative air humidity:  25 to 95%
  • Size:  230mm×110mm×15mm
  • Weight:  165g
  • At max RF transmission, the power output is 0dBm (equivalent to 1mWatt)

 

CH-101 

  • RF transmitter frequency band:  ISM 433.92Mhz
  • Modulation mode:  Amplitude Shift Keying
  • TX Transmitter Frequency Accuracy:  ±120KHz
  • Phase Noise: >60dBC at 10KHz
  • Radiated spurious emission: <-36dBm
  • Transmitting power: < 0dBm 
  • Quiescent current:  0
  • Operating current: <25mA
  • Transmitter LED indicator
  • Transmitting range: >30 metres indoor ,outdoor > 70 metres (with CH105)
  • Reed switch double side version
  • Coupler triggers to transmit RF Signal by double sides
  • Battery requirement: 1 × 23A 12V Alkaline battery
  • Battery lifetime up to 1 year
  • Waterproof
  • Operational temperature range:  -20 o C to 55 o C
  • Storage temperature range:  -30 o C to 70 o C
  • Relative air humidity:  25 to 95%
  • Size:  230mm×110mm×15mm
  • Weight:  160g
  • At max RF transmission, the power output is 0dBm (equivalent to 1mWatt)

 

CH-104 

  • RF transmitter frequency band:  ISM 433.92Mhz
  • Modulation mode:  Amplitude Shift Keying
  • TX Transmitter Frequency Accuracy:  ±120KHz
  • Phase Noise: >60dBC at 10KHz
  • Radiated spurious emission: <-36dBm
  • Transmitting power: < 0dBm 
  • Quiescent current:  0
  • Operating current: <25mA
  • Transmitter LED indicator
  • Transmitting range: >30 metres indoor ,outdoor > 70 metres (with CH105)
  • Membrane switch single side touch RF transmitter
  • Battery requirement: 1 × 23A 12V Alkaline battery
  • Battery lifetime up to 1 year
  • Waterproof
  • Operational temperature range:  -20 o C to 55 o C
  • Storage temperature range:  -30 o C to 70 o C
  • Relative air humidity:  25 to 95%
  • Size:  230mm×110mm×15mm
  • Weight:  160g
  • At max RF transmission, the power output is 0dBm (equivalent to 1mWatt)

 

APPROVED STANDARDS:

CE
FCC
ETL (CH-105)
RoHs
WEEE