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More Details About Emergency Telephone and Intercom System


Product Description

  Casing MaterialCold rolled steel body
  Handset MaterialNo handset
  KeypadNo keypad
  TemperatureOperating: -30°C to +70°C

Storing: -40°C to +75°C

  Weather ResistanceIP 55
  Ringing ToneShrill warble tone 80 dBA at 1 metre typical
  Hook switchNo hook switch
  M.T.B.F.Calculated to have an M.T.B.F. in excess of 50,000 hours using
  WeightUp to 1 kg depending on option



Technical Specification

 Analogue Version
  Power SupplyFrom the analogue telephone network
  Supply Voltage24 VDC to 65 VDC
  Supply Current20 mA DC to 100 mA DC
  Ringer Volume– 80dB(A) at a distance of 1 m
– 110dB(A) at a distance of 1 m (for external horn speaker)
  Dialing MethodDTMF mode in accordance with ITU-T recommendation Q.23


 SIP Version
  Power SupplyPoE or 12V DC
  Power Consumption-Idle:1.5W
  SIP ProtocolSIP 2.0 (RFC3261)
  Support CodecG.711 A/U, G.722 8000/16000, G.723, G.729
  Communication TypeFull duplex
  Ringer Volume– 90~95dB(A) at a distance of 1 m
– 110dB(A) at a distance of 1 m (for external horn speaker)


 Ambient conditions
  Protection TypeIP 66 as per EN60529
  Operating Temperature-30°C to +70°C
  Storage Temperature-40°C to +75°C




★ Standard Analog telephone/ SIP telephone

Robust housing, constructed of stainless steel

Vandal resistant metal button and rugged keypad

★ Hands free operation

★ Weather proof protection: up to IP 65

Flush mounting, simple installation

4 X Tamper proof screws for mounting
★ CE, FCC, ROSH compliant

JR308-FK Multi-function Intercom more commonly used in parking lots, roadside, railway/metro platforms, highway, police stations, stadiums, outside building, etc.

A speed dial of the phone helps the user to call for help to the help center in time, making the help convenient and quick.

Rugged SIP Call Box Weatherproof Telephone


Packing & Delivery

  Unit Size170 *130 *60 (mm)
  Carton Size200 *140 *100 (mm)
  Packaging MaterialsPearl cotton, carton
  Net Weight0.8 KG
  Gross Weight1 KG

Heavy Duty, Vandal Resistant Metal Telephones

PortShenzhen, Guangdong
Lead Time
(If you finish the payment today, your order will ship out within the delivery date.)
Est. Time(Days)225To be negotiated
Customized Accessories
Heavy Duty, Vandal Resistant Metal Telephones

      J&R provide LOGO printing and accessories customization services.

We will also provide suitable solutions according to the needs of customers.


      HOOK FUNCTION: Magnetic hooks for choice

      KEYBOARD SHAPE: Round buttons and square buttons for choice

      INDICATOR LAMP COLOR: Red, yellow, blue, green for choice

      MOTHERBOARD MODEL: 2G/3G/4G/SIP/GSM for choice

      HADSET CORD: Black curly handset cord or stainless steel spiral cord

If you have any custom requirements, please feel free to contact us.



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