INTERTALK FM134wht3-220v-A 3 channel FM wireless home intercom power-line system 3-station white

Brand: Calford
Product Code: FM134wht3-220v-A
Availability: Out Of Stock
Price:
$66.99

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Thanks for your looking at our "power-line" intercom.

Please read carefully the SPECIFICATION of Product Description about the Operational Requirement of this device. This kind of power-line intercom is mainly for current user to replace their old unit, not recommended for first time user.

For first time user, we recommend you to buy our other New FM Radio Circuit multi-channel intercoms (because new intercom design is not using house power-line as transmission media).

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Item No. : FM134wht3-220v-A  3-Station 3-channel FM wireless intercom power-line system

No installation required --- just plug in and press to talk

- SOFT TOUCH and BIG -- LOCK, TALK, CALL buttons

- A/B/C   LED channels indicator

- Desk or wall-mountable

- Lockable TALK button let you talk continuously

- FM circuitry provides clear, reliable reception and transmission

- CALL button to signal other stations

- Convenient front Rotary power ON/OFF volume control switch

- Unit size : Approx. 6.69 x 4.13 x 1.78 inches (170 x 105 x 45 mm)

- Working voltage : AC 220 voltage AC outlet

 

What's in the box :

* Instruction sheet

* 3 station units

(with round-pin type plug)

 

Note : Please read the SPECIFICATION about the Operation Requirement for this kind Power-line Intercom before buying.

System required :
House power-line system IMPORTANT NOTE : (Operational requirement for house power-line intercom system) :............... You are buying power-line intercom system (not radio frequency type), the operation of this system depends on ..........A) The wiring layout of your house power line – single or dual phase. ..........B) Static noise (interference) existed or generated from the power line. ....................................................1) THIS INTERCOM UNITS TRANSMIT AND RECEIVE FM MODULATED AUDIO SIGNAL FROM ONE UNIT TO ANOTHER BY USING HOUSE ELECTRICAL WIRES AS CARRIER. 2) THEY MUST BE CONNECTED IN AC OUTLETS THAT ARE ON THE SAME BREAKER BOX (SAME CIRCUIT), NOT SEPARATED BY SUB-PANELS OR BY DIFFERENT BREAKER BOXES................... Most AC outlets operate on one circuit; but some outlets may be on multiple circuits................... If the intercom system is not plugged into same power meter of the wire, they are NOT on the same phase/line, they will NOT communicate................. If you used power line carrier intercom before, it should be no problem to use our intercom system.
Cause of wiring : 1) Cause of wiring problem : The residential distribution for 240V/120V is based on a 3-wires earth mid-point architecture. Two circuits of 120V/60Hz is distributed for household and the summation of the phases provides the higher voltage necessary for high power apparatus while minimizing the requirement on copper. For a proper phase load balancing, it is common to wire the electrical service for each floor into different phases at the distribution box. The intercom can only work if the outlets are being wired in the same circuit..................... a) THIS INTERCOM UNITS TRANSMIT AND RECEIVE FM MODULATED AUDIO SIGNAL FROM ONE UNIT TO ANOTHER BY USING HOUSE ELECTRICAL WIRES AS CARRIER. .................... b) THEY MUST BE CONNECTED IN AC OUTLETS THAT ARE ON THE SAME BREAKER BOX (SAME CIRCUIT), NOT SEPARATED BY SUB-PANELS OR BY DIFFERENT BREAKER BOXES. .................... 2) Interference and static noise : Power-line intercom uses the AC power line as the medium. It is subject to any interference already existed (like CFL, computer, AC AM/FM clock radio) in the power-line. Static noise interferences feed into power-line by unfavorable appliances with characteristics of hums, buzz. There is about 5 to 10% home being affected by this kind of interferences. The intercom system is OK, unit is non-defective. .................... 3) If you are first time user of intercom; need to know more about how intercom works before buying,, please click FAQ (frequently asked question) section or contact us for details. .................... For replacement of old three pronged plug unit, please select our 3-wire intercom.

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