---

• + [QUESTION] How can i set smart linkage between air quality detector and air purifier?
• + [QUESTION] About fall Detector，could you send us an example of how those values must be sent?
• + [QUESTION] How do develop wifi detector connecting to our own platform?
• + [QUESTION] Can i connect heiman wifi water detector WS2WL to google home/ alexa platform?
• + [QUESTION] Should we consider voltage change when using vape detector?
• + [QUESTION] What should i pay attention when i install CO detector?
• + [QUESTION] What place should be avoid when installing the CO detector?
• + [QUESTION] What causes the Zigbee fall detector to flash a red light when setting up the network and then occasionally flash a green light?
• + [QUESTION] When test fall detector, the device send alarms when sitting on the sofa. What may lead to this?
• + [QUESTION] Why do false alarms of smoke detectors occur in humid climates? How to respond to this case?
• + [QUESTION] when i press self-test of the interlinked detector, it normally will beep 2 times, but i see the device alarm 4 times,what’s the reason?
• + [QUESTION] About fall detector's height judgment methods,for the wall-mounted method, judging a person's height is relatively easy to understand, but how does the ceiling-mounted method determine a person's height?
• + [QUESTION] Is there a recommended coverage range for CO detectors?
• + [QUESTION] The fall detector intermittently flashes LED light when powered on, it cannot be connected to the network. What could be the reason?
• + [QUESTION] Why is the consistency of the air quality detector WS3AQ different when it is powered by adaptor and battery?
• + [QUESTION] We have test the matter H&T device in HA system.What could cause the temperature and humidity detector to only display signal strength and battery level?
• + [QUESTION] Why the detector designed with sealed battery,it’s difficult to change battery?
• + [QUESTION] May i install the vape detector at the shower place?
• + [QUESTION] If the CO detector HM-733ESY detect CO in some time of one day while i am accidentally not at home,is it possible for me to check history?
• + [QUESTION] I specialize in house assembly, and all I need is a UL certified smoke detector that can be connected to other smoke and mold detectors inside the house. Which product do you recommend？