Practical Electronics for Inventors, Fourth Edition

Product Review

The M4 momentary type acts like a push button - when the A button is held down, the matching pin goes high. When the A button is released, the matching pin goes low.
The T4 toggle type acts like an alternating toggle switch - when the A button is pressed the first time, the matching pin goes high. When the A button is pressed a second time, the matching pin goes low. Turning on and off by repeated presses
The L4 latch type acts like a selector switch - when the A button is pressed the first time, the matching pin goes high. When the B button is pressed it turns A's pin off and turns B's pin on. When C is pressed, it turns B off, etc. Only one is on at a time. If you press the same button twice, it�doesn't�turn that pin off.
Receiver Module ONLY - keyfob transmitter not included