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E-Lock Electronic Kit ML222

E-Lock electronic kit

E-Lock Electronic Kit
Click the image for a larger view.

A DTMF Touch Tone Combination Lock

The ML222 E-Lock listens to DTMF touch tones entered on a mobile phone keypad and activates an on-board relay when the correct combination is entered. To operate the electronic lock, just hold the ear piece of a mobile phone near the E-Lock microphone and enter the user defined touch tone combination on the phone keypad. When the correct combination of tones is "heard" by the E-Lock, a relay on the circuit board is activated.

The normally closed relay contacts (used as a switch) OPEN in order to turn OFF the power to an externally energized solenoid or electro-magnet (not included), thus unlocking a door, cabinet, safe, etc. The number of seconds the relay remains energized is user adjustable. E-Lock is an electronic kit. User assembly and soldering is required.




PDF icon E-Lock construction & user guide (17KB)
PDF icon E-Lock schematic (25KB)


Quantity 1 to 9 $ 31.95
Quantity 10 or More $ 29.89

Quantity:    E-Lock Electronic Kit ML222