DS18B20 Temperature Sensor
$20
$50
HOSIDEN HLM8619
$55
$100
DHI-NVR4232-4KS2
$275
$305
Hikvision DS-2CD1141-I
$79
$85
Mean Well 100W Power Supply NES-100-5V/NES-100-9/NES-100-12/NES-100-15/NES-100-24/NES-100-48