Connect the EKI 2052 Combo Lock/Alarm Control to the output of any alarm, such as the 2050 Whooper Alarm Kit (not incl.), and monitor your door, drawer, or other private location.

Operates on 6-12V DV. Principles taught: LSI logic, security. Components: 7 resistors, capacitors, diode, LED, 2 transistors, SCR, IC, push switch, slide switch, 24 pin header, keypad, ribbon cable, battery snap.