Tuesday, December 11, 2012

Multi-apartment wireless intercoms



Type 1 Features
·  This Multi Intercom System is a wireless intercom system for multi-tenants in a residential complex or resort.


  • ·         20-80 Separate Users
  • ·         Long Range
  • ·         Easy Installation
  • ·         Portable Handsets
  • ·         Low Cost System
  • ·         No Call Charges
  • ·         Hands-free use for visitor
  • ·         Multiple handsets per user
  • ·         Rainproof and UV resistant
  • ·         Gate Triggering
  • ·         Low risk of lightning damage
  • ·         Rechargeable Battery Back-up
  • ·         Weight: 2 Kg
  • ·         PC programming kit

·         Dimension: 14 cm (w) x 15cm (h) x 2.5 cm (d)
·   Usage areas: Apartment blocks, Townhouse complexes, Cluster homes, Housing estates, Large properties, Office parks, Schools, Retirement villages, Long driveways, etc
·         Range 250m for light and open areas and 100m in heavily built-up areas 
·       Content: Gate Station, Power Supply,  Antenna with cable, Special Tool, User & installer Manual, Relay board
·         Radio Handsets (100 metre range in built-up areas)
·    External Antenna: Range is terrain dependant and is 100m in built-up areas and 350m in more open areas. Range will be reduced with trees, walls and structures in between the gate and house (refer to drawing under the "Downloads" section)
·         The external antenna is mounted as high as possible for improved coverage and audio Includes "L" bracket with antenna, 5m cable and connectors and extra 3m cable extension
·    If there are many walls, trees and buildings between gate and houses, the handset antenna enhances reception.

How to use
Communication is initiated from the gate station by selecting a 3 digit code such as 001 or 901 and pressing the # button. Only the selected houses handset will ring and communication is established. Communication is simplex so only one person can speak at a time but the gatestation’s microphone is always active so the visitor does not have to press any key to speak. The inside handset can enter into the conversation at any time by pressing a PTT button.

Multiple handsets can be added for the same house to have internal communication. There is a handset calling button which works on push-to-talk.

An extra gate station (back gate station) can be added for instance on the inside to notify houses when the visitor is leaving or on additional gates. All the same handsets can be called. Gate opening is only possible from a back gate if a call is in progress.

Programming is done manually or via PC. Programming mode is protected by a pin. Names and numbers are entered with the keypad. The PC programming kit is needed for large systems or when a back gate station is used. 
                   Type 2 Features
·         Frequency Range: 136-174mHz /245-246/350-390/400-470/465-520MHz(optional)
·         Channel Capacity: 5 - 100 channels ( depending of availability at the time of order from manufacturer)
·         Channel Spacing: 5kHz/6.25kHz/10kHz/ 12.5kHz/ 20kHz/25kHz/30kHz/50kHz
·         Frequency Stability: ±2.5ppm
·         Operating Temperature: -25~+60°C
·         Antenna Impedance: 50Ω
·         Operating Voltage: 7.2V
·         Dimensions: (W×H×D) 115x 56x 30mm
·         Weight:  220g(Include battery & antenna)
·         Battery: 1100/1300mAh (Li-ion Battery)

Transmitter
RF output power
4W/5W
Modulation Type
16kΦF3E
Modulation Limiting
≤5kHz
Modulation Character
+3dB / -3dB
Spurious Radiation
0.75μW
Adjacent Ch. power
≥65dB
Max Fr. Deviation
≤5kHz
Occupied Bandwidth
≤16KHz
Receiver
Receiving Sensitivity
0.25μV
Adjacent Ch. Selectivity
60dB
Inter-modulation
60dB
Co-channel suppression
-8dB
Audio Response
+2dB -10dB
Audio Output
500mW
Audio Distortion
≤3%

How to use : Every household is handed the required number of handheld Radio handset to communication with the programmable number of channels available. This also includes the gatehouses.