Calibrated Waterproof Alarm Thermometer SI-684 with Calibration
If your temperature readings are wrong, everything else is wrong.
The SI-684 Waterproof Alarm Thermometer with Calibration is built for businesses that cannot afford mistakes — whether you are running a kitchen, managing cold storage, or handling critical production.
Fast, simple, reliable.
You get 3–4 second readings, with a wide range from -50°C to 300°C, so you can check anything from frozen goods to hot food instantly — no waiting, no guessing.
Every unit comes with a calibration report traceable to national standards, so when audits come, you are ready.
No scrambling. No last-minute panic.
Built for real working environments:
-
IP66 waterproof — wash down, no problem
-
Food-grade stainless steel probe — safe, durable, accurate
-
Alarm function — know immediately when limits are exceeded
Used by hotels, hospitals, and food operators across Singapore.
Because at the end of the day, you don’t just need a thermometer —
you need proof your process is under control.
Simple to use. Easy to deploy. No training needed.
🚀 Call to Action
Ex-stock in Singapore. Next-day delivery possible.
Get yours today.
Or if you have a larger requirement, give us a call —
we can arrange a sample unit for your team to try first.
- 3-4s response time
- Waterproof IP66
- Magnetic attachment
- 10mins auto-off function
- Eco-friendly ABS plastic
- Can be recalibrated at 0°C
- Min/Max Temperature record
- Temperature Alarm set function
- Probe length of 113mm
Why Certified?
– Unit comes with an accredited calibration certificate
– No Downtime
– Time and Cost savings
Calibration Points for SI-684 are set at -20°C, 0°C and 100°C.
Kindly specify your Company Name and Address to be printed on the Calibration Report when placing order.
S$174.40
Description
If your temperature readings are wrong, everything else is wrong.
The SI-684 Waterproof Alarm Thermometer with Calibration is built for businesses that cannot afford mistakes — whether you are running a kitchen, managing cold storage, or handling critical production.
Fast, simple, reliable.
You get 3–4 second readings, with a wide range from -50°C to 300°C, so you can check anything from frozen goods to hot food instantly — no waiting, no guessing.
Every unit comes with a calibration report traceable to national standards, so when audits come, you are ready.
No scrambling. No last-minute panic.
Built for real working environments:
-
IP66 waterproof — wash down, no problem
-
Food-grade stainless steel probe — safe, durable, accurate
-
Alarm function — know immediately when limits are exceeded
Used by hotels, hospitals, and food operators across Singapore.
Because at the end of the day, you don’t just need a thermometer —
you need proof your process is under control.
Simple to use. Easy to deploy. No training needed.
🚀 Call to Action
Ex-stock in Singapore. Next-day delivery possible.
Get yours today.
Or if you have a larger requirement, give us a call —
we can arrange a sample unit for your team to try first.
Technical Data
| Temperature – NTC | |
|---|---|
| Measuring range | -20 to +70 °C |
| Accuracy | ±0.5 °C (-20 to +70 °C) |
| Resolution | 0.1 °C |
| Humidity – Capacitive | |
| Measuring range | 0 to 100 %RH* |
| Accuracy | ±3 %RH (2 to +98 %RH) at +25 °C
±0.03 %RH/K ±1 Digit |
| Resolution | 0.1 %RH |
| * Not for condensing atmospheres. | |
| General technical data | |
| Weight | 34 g |
| Dimensions | 60 x 38 x 18.5 mm |
| Operating temperature | -20 to +70 °C |
| Product-/housing material | Plastic |
| Protection class | IP20 |
| Channels | 2 internal |
| Product colour | Black |
| Standards | 2011/65/EU; EU-guideline 2014/30/EU |
| Measuring rate | 1 min – 24 h |
| Battery type | 2 x 3V button cell (CR 2032) |
| Battery life | 1 year (15 min measuring cycle, +25 °C) |
| Memory | 16,000 measuring values |
| Storage temperature | -40 to +70 °C |
Applications
Monitoring and documentation of building climate
Temperature and relative humidity are crucial factors when it comes to assessing air quality and comfort levels in indoor areas, e.g. in workplaces. Both values can be monitored and documented over the long term using data loggers.
They are also very well suited for checking ventilation systems or for assessing any building moisture which occurs.
The use of special software means measurement configurations can be carried out individually and recorded measurement data can be both analysed and archived.
Monitoring and documentation of storage temperature and humidity
Correct compliance with storage temperature and humidity is an important prerequisite for the quality assurance of many products, e.g. in the area of food and pharmaceutical products.
As a general rule, data loggers are used to do this. They automatically check and document the profile of the ambient conditions and thus make a crucial contribution to verifiable preservation of product quality.
Viewing breaches of limit values directly on the display means you can respond quickly to temperature and humidity deviations. In addition, with the help of the configuration and read-out software, customer-specific measurement configurations can be carried out and recorded measurement data can be both analysed and archived.
Monitoring and documentation of transport temperature and humidity
For all goods which react sensitively to temperature and humidity fluctuations or have to be stored within a predefined range, uninterrupted measurement data recording and documentation play a major role.
Incorrect conditions during transport can lead to major losses of quality, including the total loss of value of the products that require monitoring.
Using a data logger, shipments can be checked for compliance with the specified temperature and humidity ranges and the data can then be read, analysed and archived by means of special software.
