DS18B20 Temperature Sensor
$20
$50
HOSIDEN HLM8619
$55
$100
DHI-NVR4232-4KS2
$275
$305
Hikvision DS-2CD1141-I
$79
$85
Mean Well NES-350-3.3V/NES-350-5V/NES-350-7.5V/NES-350-12V/NES-350-15V/NES-350-24V/NES-350-36V/NES-350-48V