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• + I have a system with about 37 devices connected but it takes several refreshes to display all the devices. What is the cause?
• + What’s the wall penetration distance and maximum distance of your HM-638PHW smoke alarm?
• + Can i test the malfunction of smoke alarm manually?
• + Can the smoke alarm and heat alarm be set in the "Do not Disturb" mode?
• + 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?
• + 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?
• + What is good and stable signal about the signal strength of interlink device?
• + Why do false alarms of smoke detectors occur in humid climates? How to respond to this case?
• + How to set up a smart linkage in the Tuya APP?
• + When test fall detector, the device send alarms when sitting on the sofa. What may lead to this?
• + Can we develop RF,WiFi,4G module to integrate with Heiman RF smoke alarm S1-R?
• + What causes the Zigbee fall detector to flash a red light when setting up the network and then occasionally flash a green light?
• + What’s the design voltage value for the classification of battery power levels of Heiman smoke alarm?
• + What’s the reason that i can’t interconnect the HM-638PHM-AC when i cut off the AC power supply and use battery only?
• + What should i do to delete interlinked remote controller if i can’t find the devices?
• + Why can’t i delete the interlinked remote controller directly in APP?
• + What place should be avoid when installing the CO detector?
• + How long will it takes for the interconnected device’s network test to run ?
• + How long does the interconnected smoke alarm in the group sound after one being made self-test？
• + Why can’t i add matter device D1-M to google platform through ipad?