Customer Service Hotline：
+8613261677119
+8613261677119
trampoline safety net tension sensor direct from Wanlin Fire Protection — 12-year factory experience, WL-SG500 fully certified CE/FCC/RoHS. Key specs: WiFi/Zigbee wireless, 8s alert push via APP/SMS/Audible + Auto Gas Shut-Off, AC Powered + Battery Backup