1+7 Channel Telephone Activated Relay Board 1+7 Channel Telephone Activated Relay Board Smart Kit Electronics DTMF Decoder telephone activated relay board with one on-board relay plus eight additional outputs for driving an external relay board. Control electrical devices simply by calling your phone from any location in the world.... Electronics > Circuit Components > Printed Circuit Boards > Development Boards 1225KT 1225KT View Offer Quasar Electronics Limited

1+7 Channel Telephone Activated Relay Board

AS1225KT - 1+7 Channel Telephone Activated Relay Board

This product is obsolete/discontinued and no further stocks are available. Please see alternatives in the category links above.

Pre-Assembled and Kit versions available

DTMF Decoder telephone activated relay board with one onboard relay plus eight digital outputs for driving an external relay board. Ideal for control of external electrical devices simply by calling your phone from any location in the world and making a few key presses.

The board has a single 10 Amp mains rated relay output that you can use the relay to control external devices in your home, office, factory, etc.

The board also has 8 additional digital outputs that can be connected to an external relay board like our CT006 (not included). Channel 1 is shared with the onboard relay output.

It has three LED status indicators and the relay status can also be verified remotely using the phone line.

4 number user-settable access code for security. The circuit is PIC based for accuracy and reliability. The unit will answer the incoming call almost immediately (1 ring). This setting is not user adjustable. If you require more flexibility please see our 4-Channel DTMF Telephone Remote Control Relay Switcher (3140).

Unit can be used with a standard landline or GSM unit (not supplied). Please see User Manual below for details.

The board includes an impedance matching transformer. RJ-11 telephone Line-in and Extension-Out sockets. Solder posts for relay and power connections. Solder provided with kit version.

Supply Voltage12Vdc, 0.5A (Order Code 660.446UK with connector 777.001UK)
Relay Output1 x SPDT Relay
Relay Output Load10 Amps @ 230Vac max.
Relay ConnectionsCommon, Normally Open (the Normally Closed relay contact is present but NOT brought out)
Additional Outputs8 x TTL (Logic Level) Digital Outputs
User Settings1. Password (4 digits)
Board Dimensions86 x 115 x 28 mm
Board Connections2 x RJ11 Telephone Sockets (Line-In / Extension-Out)
Solder posts for power and relay connections
Compatibility* This product can be connected to any analogue or broadband phone line and both corded or cordless (analogue and DECT) telephone sets and is operated using simple DTMF tones. It can also be used through a GSM unit.
Product FormatsSELF-ASSEMBLY Electronic Kit (KT)or
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
DocumentationUser Manual
Optional Extras
    • BT to RJ11 Phone Cord (Order Code 113.532UK for UK phone systems)
    • 8-Channel Isolated IO Relay Board Module (Order Code CT006)

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