Fire Alarm or House Alarm Circuit (CPT11S)

House Alarm Circuit

Kit includes:

• 1 × Red 5 mm LED
• ½ Connector block
• 2 × 330 Ω resistors
• 1 × S9014 NPN transistor
• 1 × Photoresistor (LDR)
• 1 × 9 V battery clip
• 1 × Buzzer
• 1 × Switch
• Extra wires

Battery not included.

Fire Alarm Circuit

Kit includes:

• 1 × Red 5 mm LED
• ¼ Connector block
• 2 × 1 kΩ resistors
• 1 × S9014 NPN transistor
• 1 × Thermistor
• 1 × 9 V battery clip
• 1 × Buzzer
• 1 × Switch
• Extra wires

Battery not included.