ChinaGMKtec is a Chinese computer maker founded as Shenzhen GMK Technology that builds mini PCs almost exclusively, with the name standing for Geek, Modern and Kreativ. Its range runs from compact NucBox office machines to the M series and the EVO-X line of AMD Ryzen AI workstations, and the company positions itself around desktop AI computing. Machines typically ship with Windows 11 Pro, run Linux, and keep memory and M.2 storage socketed rather than soldered so buyers can upgrade them.
View GMKtec
Heiman is a Chinese manufacturer of smart safety and security sensors, including smoke alarms, gas detectors, water leak sensors and door/window contacts. The company produces Zigbee and Z-Wave devices used across many smart home hubs and is a common original equipment supplier for other brands. Heiman focuses on affordable, safety-oriented sensors for home automation.
View HeimanEvery product, compared
Switch between each brand's full lineup, tap any product for specs, compatibility and pricing.
Door & Window SensorsHeimanWindow Door Alarm
20% OFF$19.98$15.98
Gas DetectorsHeimanHS1CG Series Combustible Gas Sensor
Gas DetectorsHeimanWS2CG Series Combustible Gas Detector
Motion SensorsHeimanSmart Motion Sensor
$23.99
Motion SensorsHeimanWiFi Smart Motion Sensor
$12.98
SirensHeimanSmart Siren HS2WD series
$79.99
Smoke & CO DetectorsHeimanHS1SA Series Smoke Alarm
5% OFF£16.99£16.14
Smoke & CO DetectorsHeimanMatter Smoke Detector S1-M
$39.99
Smoke & CO DetectorsHeimanSmart CO Alarm
17% OFF$59.99$49.99
Vibration SensorsHeimanSmart Vibration Sensor HS1VS series
$14.90
Water Leak SensorsHeimanSmart Water Leakage Sensor
$19.99