Fixing the date/time of a ST-977 or ST-977T weather station
Posted by jpluimers on 2024/09/23
A long time ago I asked about the manual for a Daryis ST-977 weather station, but got no response from the manufacturer or anyone else.
So about 9 months later the topic came back up and I did get some responses, most suggesting to use the SET button which I already tried earlier.
I retried and found out the button was both bouncing and needed to be held for a really long time (15+ seconds!) to even switch to “edit” mode.
With 4 AA batteries in the base it at least should survive a power outage and hopefully by now we have switched away from using daylight saving time in Europe so no time changes are needed in the future.
Later I found out the FCC was on the external sensor and could find back a manual of a similar model:
Via [Wayback/Archive] FCC ID: QZST98888 – Google Search I found [Wayback/Archive] Suntree T98888 WEATHER STATION-OUTDOOR SENSOR User Manual M ST 971 2 ver 1 050324 which has [Wayback] usermanual.wiki/Suntree/T98888-526447.pdf
Other documents via the FCC [Wayback/Archive] Suntree Holdings WEATHER STATION-OUTDOOR SENSOR T98888 FCC ID QZST98888:
- [Wayback] fccid.io/QZST98888/User-Manual/USERS-MANUAL-526447.pdf
- [Wayback] fccid.io/QZST98888/Operational-Description/OPERATIONAL-DESCRIPTION-526439.pdf
- [Wayback] fccid.io/QZST98888/Block-Diagram/BLOCK-DIAGRAM-526426.pdf
- [Wayback] fccid.io/QZST98888/Schematics/SCHEMATICS-526440.pdf
- [Wayback] fccid.io/QZST98888/Label/ID-LABEL-SAMPLE-1-526429.jpeg
- [Wayback] fccid.io/QZST98888/Label/ID-LABEL-SAMPLE-2-526430.pdf
- [Wayback] fccid.io/QZST98888/External-Photos/EXTERNAL-PHOTOS-1-526427.jpeg
- [Wayback] fccid.io/QZST98888/External-Photos/EXTERNAL-PHOTOS-2-526428.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-5-526438.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-4-526437.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-3-526436.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-2-526435.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-1-526434.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-8-526433.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-7-526432.jpeg
- [Wayback] fccid.io/QZST98888/Internal-Photos/INTERNAL-PHOTOS-6-526431.jpeg
- [Wayback] fccid.io/QZST98888/Test-Setup-Photos/TEST-SETUP-PHOTOS-1-526445.jpeg
- [Wayback] fccid.io/QZST98888/Test-Setup-Photos/TEST-SETUP-PHOTOS-2-526446.jpeg
- [Wayback] fccid.io/QZST98888/Test-Report/TEST-REPORT-1-526441.pdf
- [Wayback] fccid.io/QZST98888/Test-Report/TEST-REPORT-2-526442.pdf
- [Wayback] fccid.io/QZST98888/Test-Report/TEST-REPORT-3-526443.pdf
- [Wayback] fccid.io/QZST98888/Test-Report/TEST-REPORT-4-526444.pdf
And [Wayback/Archive] Suntree Holdings Company Limited FCC ID Applications (QZS) brought me a both a precursor of the above ([Wayback/Archive] Suntree Holdings Weather Sensor Transmitter T98898 FCC ID QZST98898) and base weather station ([Wayback/Archive] Suntree Holdings WEATHER STATION-CLOCK T98998 FCC ID QZST98998) similar to mine which regrettably does not have schematics in the filed documentation:
- [Wayback] fccid.io/QZST98998/User-Manual/USERS-MANUAL-526407.pdf
- [Wayback] fccid.io/QZST98998/Block-Diagram/BLOCK-DIAGRAM-526403.pdf
- [Wayback] fccid.io/QZST98998/Label/ID-LABEL-SAMPLE-526404.pdf
- [Wayback] fccid.io/QZST98998/External-Photos/EXTERNAL-PHOTOS-1-526408.jpeg
- [Wayback] fccid.io/QZST98998/External-Photos/EXTERNAL-PHOTOS-2-526409.jpeg
- [Wayback] fccid.io/QZST98998/Internal-Photos/INTERNAL-PHOTOS-1-526410.jpeg
- [Wayback] fccid.io/QZST98998/Internal-Photos/INTERNAL-PHOTOS-2-526411.jpeg
- [Wayback] fccid.io/QZST98998/Internal-Photos/INTERNAL-PHOTOS-3-526416.jpeg
- [Wayback] fccid.io/QZST98998/Internal-Photos/INTERNAL-PHOTOS-4-526417.jpeg
- [Wayback] fccid.io/QZST98998/Internal-Photos/INTERNAL-PHOTOS-5-526418.jpeg
- [Wayback] fccid.io/QZST98998/Internal-Photos/INTERNAL-PHOTOS-6-526424.jpeg
- [Wayback] fccid.io/QZST98998/Test-Setup-Photos/TEST-SETUP-PHOTOS-1-526419.jpeg
- [Wayback] fccid.io/QZST98998/Test-Setup-Photos/TEST-SETUP-PHOTOS-2-526420.jpeg
- [Wayback] fccid.io/QZST98998/Test-Setup-Photos/TEST-SETUP-PHOTOS-3-526421.jpeg
- [Wayback] fccid.io/QZST98998/Test-Setup-Photos/TEST-SETUP-PHOTOS-4-526422.jpeg
- [Wayback] fccid.io/QZST98998/Test-Setup-Photos/TEST-SETUP-PHOTOS-5-526423.jpeg
- [Wayback] fccid.io/QZST98998/Test-Report/TEST-REPORT-1-526405.pdf
- [Wayback] fccid.io/QZST98998/Test-Report/TEST-REPORT-2-526406.pdf
Tweets with pictures:
- [Wayback/Archive] Jeroen Wiert Pluimers on Twitter: “Does anyone still have the user manual for the ST-977 weather station? We lost ours and want to set the date and time. It used to be sold by “Daryis” (see picture of bottom). Nowadays, it seems to be sold by Jaskey, but they do not respond to inquiries
jaskey.com/st977t-jumbo-glowing-icons-weather-station-p-347.html?cPath=109_104“
- [Wayback/Archive] Jeroen Wiert Pluimers on Twitter: “@Dinsdal85174312 @FransvdStorm Temperatuur binnen ongeveer 25°C en buiten 35°C (in de schaduw, uit de wind). Tijd klopt niet, want ik ben de handleiding kwijt en krijg de tijd niet goed ingesteld.”
temperature outside 35°C and inside 25°C on 20220719 during the July 2022 European heat wave
- [Wayback/Archive] Jeroen Wiert Pluimers on Twitter: “@Dinsdal85174312 @FransvdStorm Knopjes achterzijde”
- [Wayback/Archive] Jeroen Wiert Pluimers on Twitter: “@Dinsdal85174312 @FransvdStorm Zucht: de SET knop dendert. Na openen niets bijzonders aan de print te zien (geen grafietknoppen met vuile printsporen die je met IPA schoon kunt maken). Dus met een half uur proberen uiteindelijk dit resultaat. Nu batterijen in de voet als buffer bij stroomuitval.”
after fiddling some half hour with the bouncing SET button I managed to set the time; the printed circuit board does not look odd despite the SET button having trouble.
buttons on the back-side
–jeroen
The Wiert Corner - irregular stream of stuff 
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