DS18B20 Temperature Sensor
$20
$50
HOSIDEN HLM8619
$55
$100
DHI-NVR4232-4KS2
$275
$305
Hikvision DS-2CD1141-I
$79
$85
Mean Well 100W Switch Power Supply LRS-100-3.3V/LRS-100-5V/LRS-100-12V/LRS-100-24V/LRS-100-36V