DS18B20 Temperature Sensor
$20
$50
HOSIDEN HLM8619
$55
$100
DHI-NVR4232-4KS2
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$305
Hikvision DS-2CD1141-I
$79
$85
MEAN WELL NDR-120 Single Output 120W DIN Rail Mounted Power Supply NDR-120-12 NDR-120-24