DS18B20 Temperature Sensor
$20
$50
HOSIDEN HLM8619
$55
$100
DHI-NVR4232-4KS2
$275
$305
Hikvision DS-2CD1141-I
$79
$85
P6 SMD Indoor RGB Full color LED Screen Modules 32*32dots 192*192mm 1/16 Scan