3140 - 4-Channel DTMF Telephone Relay Switcher

Simply plugs into your telephone line* and provides 4 independently controllable relay outputs. You can then call your number using a DTMF (tone dialling) telephone from anywhere in the world and remotely turn on/off any of the relays as desired.

It is possible to control a wide variety of devices via the relays for example security lights, heating and pump controllers, computers, etc.*

Each output is capable of switching resistive loads up to 48Vac/24Vdc @ 5 amps max and have high quality detachable screw terminal block connectors. (*NB The relays are rated to switch up to 240Vac mains voltage but the exposed screw terminal block heads would need to be placed inside a suitable enclosure to prevent exposure to hazardous voltages).

The user can set a 4-digit security Password, Tamper facility, number of Rings to Answer, Auto Hang-up time and Lockout facility. Compatible with all European, North American and Asian phone networks.

Supplied with a high quality custom made case.

Technical Specifications
Power	Regulated 12-15Vdc (Order Code PSU446 is suitable - some switch mode power supplies may not be compatible with this product)
Current Consumption	150mA max (30mA standby plus 30mA per active relay)
Outputs	4 x SPDT Relays
Maximum Output Load (Resistive)	Up to 240Vac* or 28Vdc @ 5 Amps max. per relay (Relay Datasheet)
Output Connections	NO, NC, C (Relay FAQ)
User Settings	1. Password (4 - 8 digits) 2. Anti-Tamper (1 - 9 attempts before Lockout; 0 disables feature) 3. Rings to answer (1-9; 0 disables auto-answer) 4. Auto hangup time (1 - 99 seconds; 0 disables feature) 5. Lockout time (1 - 99 minutes; 00 disables feature)
Dimensions	130W x 110D x 30H mm
Connections	Power: 5.5 x 2.5mm DC socket Relays: 4 x 3-way pluggable screw terminal blocks Phone: RJ11 type
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.
Product Formats	SELF-ASSEMBLY Electronic Kit (KT ) or PRE-ASSEMBLED Electronic Module (AS) more
Documentation	User Manual

• Power Supply: Regulated 12Vdc (Order Code PSU446 is suitable)
• BT to RJ11 Phone Cord (Order Code 285.147 for UK phone systems)
• This product can be protected from possible mains/phone line power surge damage using our optional Surge Protection Extension Lead With 8 Gang And USB/Modem/LAN Sockets (Order Code 429.786)