[{"data":1,"prerenderedAt":163},["ShallowReactive",2],{"help-\u002Fhelp\u002Ftroubleshooting-offline-sensors":3},{"id":4,"title":5,"body":6,"category":151,"description":152,"extension":153,"meta":154,"navigation":155,"order":156,"path":157,"seo":158,"stem":159,"summary":160,"updated":161,"__hash__":162},"help\u002Fhelp\u002Ftroubleshooting-offline-sensors.md","Troubleshooting offline sensors",{"type":7,"value":8,"toc":139},"minimark",[9,13,26,31,38,42,58,62,76,80,83,101,105,108,112,121,125],[10,11,5],"h1",{"id":12},"troubleshooting-offline-sensors",[14,15,16,17,21,22,25],"p",{},"A device shows as ",[18,19,20],"strong",{},"offline"," when the platform has not heard from it for longer than expected. FreshControls raises an ",[18,23,24],{},"offline alarm"," for that device rather than letting it disappear quietly, and escalates it like any other alarm — so silence is something you get told about, not something you have to notice. Readings taken while a device is off the network are not recovered, so treat an offline device as a gap to close quickly. Work through these checks in order.",[27,28,30],"h2",{"id":29},"_1-confirm-it-is-really-offline","1. Confirm it is really offline",[14,32,33,34,37],{},"Open the device and check the ",[18,35,36],{},"last seen"," time. A single missed report during a long reporting interval is normal. Treat a device as offline only once it has clearly missed several expected check-ins.",[27,39,41],{"id":40},"_2-check-power","2. Check power",[43,44,45,52],"ul",{},[46,47,48,51],"li",{},[18,49,50],{},"Battery sensors"," — replace the field-replaceable batteries and confirm the sensor powers up. A low battery is the single most common cause.",[46,53,54,57],{},[18,55,56],{},"Wired boards and gateways"," — confirm the power supply or PoE injector is live and the status light is on.",[27,59,61],{"id":60},"_3-check-range-and-placement","3. Check range and placement",[43,63,64,70],{},[46,65,66,69],{},[18,67,68],{},"Wi-Fi sensors"," — a freezer's metal walls attenuate the signal. Confirm the sensor is within reach of an access point and that the network password has not changed.",[46,71,72,75],{},[18,73,74],{},"LoRa sensors"," — confirm a gateway is powered and within range. Thick walls, racking, and distance all cut range; moving a gateway closer often fixes a stubborn sensor.",[27,77,79],{"id":78},"_4-check-the-gateway","4. Check the gateway",[14,81,82],{},"If several sensors went offline at once, suspect the gateway they share rather than the sensors themselves.",[43,84,85,88,95],{},[46,86,87],{},"Confirm the gateway is powered and its uplink light is healthy.",[46,89,90,91,94],{},"For ",[18,92,93],{},"Ethernet"," gateways, check the network drop, the cable, and that the port is live.",[46,96,90,97,100],{},[18,98,99],{},"cellular"," gateways, check signal strength; relocating the gateway or adding the external antenna option can help in a weak-signal spot.",[27,102,104],{"id":103},"_5-confirm-it-is-back","5. Confirm it is back",[14,106,107],{},"Once a device is back on the network its next scheduled report clears the offline alarm and the history resumes. The period it was off the network stays visible as a gap in the record — that is deliberate: a compliance log should show what was actually measured, never a reconstruction.",[27,109,111],{"id":110},"still-offline","Still offline?",[14,113,114,115,120],{},"If a device stays dark after power, range, and gateway checks, ",[116,117,119],"a",{"href":118},"\u002Fcontact","contact support"," with the device serial and we will help you narrow it down.",[27,122,124],{"id":123},"related","Related",[43,126,127,133],{},[46,128,129],{},[116,130,132],{"href":131},"\u002Fhelp\u002Fgetting-started","Getting started",[46,134,135],{},[116,136,138],{"href":137},"\u002Fhelp\u002Falarm-profiles-basics","Alarm profiles basics",{"title":140,"searchDepth":141,"depth":142,"links":143},"",2,3,[144,145,146,147,148,149,150],{"id":29,"depth":141,"text":30},{"id":40,"depth":141,"text":41},{"id":60,"depth":141,"text":61},{"id":78,"depth":141,"text":79},{"id":103,"depth":141,"text":104},{"id":110,"depth":141,"text":111},{"id":123,"depth":141,"text":124},"Troubleshooting","A sensor stopped reporting? Work through power, range, connectivity, and gateway checks to get it back online.","md",{},true,1,"\u002Fhelp\u002Ftroubleshooting-offline-sensors",{"title":5,"description":152},"help\u002Ftroubleshooting-offline-sensors","A step-by-step checklist for a sensor that stopped reporting — power, range, connectivity, and gateways.","2026-08-20","TuQXfHRDF90lxQpMfNGZbR04QaAgNOdPEqnLv--r23g",1788197584212]