SD100 - Heart rate monitor Rossmax - Free user manual and instructions
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| Product Type | Heart Rate Monitor |
| Model | SD100 |
| Brand | Rossmax |
| Display Type | LCD |
| Heart Rate Measurement | Wireless chest strap (included) |
| Measurement Range | 30 – 240 bpm |
| Accuracy | ±1% or ±1 bpm |
| Functions | Heart rate, stopwatch, time, alarm |
| Power Source | 1 x CR2032 battery (3V) |
| Battery Life | Approx. 200 hours |
| Water Resistance | IPX4 (splash resistant) |
| Dimensions (Watch) | 45 x 35 x 12 mm |
| Weight (Watch) | Approx. 30 g (without battery) |
| Belt Dimensions | Adjustable up to 130 cm |
| Material | Plastic (watch), fabric (belt) |
| Cleaning | Wipe with damp cloth, mild soap |
| Storage Temperature | -10°C to 50°C |
Frequently Asked Questions - SD100 Rossmax
How do I pair the chest strap with the watch?
Press and hold the SET button on the watch until the heart icon flashes. Wet the chest strap electrodes and wear it. The watch will automatically detect the signal.
What type of battery does the SD100 use?
It uses a CR2032 lithium coin cell battery (3V). Replace it when the display dims or shows a low battery icon.
How do I change the battery?
Open the battery compartment on the back of the watch using a small screwdriver. Remove the old battery and insert a new CR2032 with the positive side facing up. Close the cover securely.
Is the SD100 waterproof?
It is splash resistant (IPX4). Avoid submerging in water or showering with it. The chest strap is not waterproof.
How do I clean the chest strap?
Hand wash the strap in cold water with mild soap. Rinse and air dry. Do not machine wash or use bleach.
What is the maximum heart rate that can be measured?
The monitor can measure heart rates from 30 to 240 beats per minute.
Can I use the watch without the chest strap?
No, the watch requires a wireless signal from the chest strap to display heart rate. It functions as a regular watch without the strap.
How do I reset the stopwatch or timer?
Press the START/STOP button to start/stop. Press RESET to zero the stopwatch. Refer to the manual for timer settings.
Why is the heart rate reading erratic?
Ensure the chest strap electrodes are moist and properly positioned below the chest. Avoid excessive movement. Replace the battery if contact is poor.
Where can I find replacement chest straps?
Replacement straps are available from Rossmax dealers or online retailers. Use only genuine straps to ensure compatibility.
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USER MANUAL SD100 Rossmax
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Product information
Brand : Rossmax
Model : SD100
Category : Heart rate monitor