DS18B20 Temperature Sensor
$20
$50
HOSIDEN HLM8619
$55
$100
DHI-NVR4232-4KS2
$275
$305
Hikvision DS-2CD1141-I
$79
$85
MeanWell AC110V220V input SE-600-5V/SE-600-12V/SE-600-24V/SE600-48V Power supply