DS18B20 Temperature Sensor
$20
$50
HOSIDEN HLM8619
$55
$100
DHI-NVR4232-4KS2
$275
$305
Hikvision DS-2CD1141-I
$79
$85
Mean Well 200W Switch power supply NES-200-5V/NES-200-12V/NES-200-24V