1x4 Matrix Keypad Membrane LED These are Carbon Film Resistor

These are Carbon Film Resistor with a value of 270 ohm 1/4W and tolerance of ±5%

Resistance Value 24 ohm Color Code Red

Meanwell's LRS-50 series is a 50W single-output enclosed type power supply with 30mm of low profile design

12V 4-Channel Relay module is able to control various appliances and other equipment with a large current

The thermal shutdown circuitry

1x4 Matrix Keypad Membrane LED These are Carbon Film ResistorDC 12V 14 Key Matrix Membrane Switch Keypad is a high quality product at a very low cost for your Applications needs. This 4 button keypad provides a useful human interface component for microcontroller projects. Convenient adhesive backing provides a simple way to mount the keypad in a variety of Applications. The Keypad 14 features a total of 4 buttons in Matrix form. This is a membrane keypad with no moving parts. A female 5 pin berg connector is