Introduction
This user manual provides comprehensive instructions for the Sigma Analog Chest Strap, designed for use with compatible Sigma heart rate monitors such as the Allround I and Allround II series. Please read this manual carefully before using the product to ensure proper operation, maximize performance, and maintain product longevity.
Safety Information
- Do not attempt to open or modify the chest strap or its components. This may void the warranty and cause damage.
- Keep the device out of reach of small children.
- If you experience skin irritation, discontinue use and consult a physician.
- Dispose of batteries responsibly according to local regulations.
- This device is not a medical device and should not be used for diagnostic or treatment purposes.
Product Overview
The Sigma Analog Chest Strap consists of a flexible elastic strap and a sensor module that detects heart rate signals. The strap is adjustable to fit various chest sizes, and the sensor module is designed for comfortable wear during physical activity.
Figure 1: Overview of the Sigma Analog Chest Strap. The image displays the black elastic chest strap with an adjustable buckle and the integrated sensor module, which features the "SIGMA GERMANY" logo.
Setup
1. Battery Installation (if applicable)
The chest strap comes with a pre-installed CR2 battery. If replacement is needed, refer to the Maintenance section.
2. Preparing the Electrodes
Before wearing, moisten the two electrode areas on the back of the chest strap (the ribbed sections) with water or electrode gel. This ensures good contact with your skin for accurate heart rate detection.
3. Wearing the Chest Strap
- Adjust the elastic strap to a comfortable fit around your chest, just below your pectoral muscles.
- Ensure the sensor module is centered on your chest, with the Sigma logo facing outwards.
- The moistened electrodes should be in firm contact with your skin.
Operating
1. Pairing with Your Heart Rate Monitor
The Sigma Analog Chest Strap is designed to work with compatible analog heart rate monitors. Typically, no manual pairing is required as the analog signal is continuously broadcast. Simply ensure your heart rate monitor is turned on and within range.
2. Starting Your Workout
Once the chest strap is correctly worn and the electrodes are moistened, your heart rate monitor should automatically detect the signal. Begin your activity as usual. Your heart rate will be displayed on your compatible device.
3. Ending Your Workout
After your workout, remove the chest strap. It is recommended to clean the strap immediately after use (see Maintenance section).
Maintenance
Cleaning
- After each use, rinse the chest strap under running water to remove sweat and salt residue.
- Wipe the sensor module with a damp cloth. Do not use abrasive cleaners or solvents.
- Allow the strap to air dry completely before storing. Do not machine wash or tumble dry.
Battery Replacement
The chest strap uses a CR2 battery. When the battery is low, your heart rate monitor may display an indicator or show erratic readings. To replace the battery:
- Carefully open the battery compartment on the back of the sensor module using a small coin or appropriate tool.
- Remove the old battery.
- Insert a new CR2 battery with the positive (+) side facing up.
- Close the battery compartment securely, ensuring the seal is properly seated to maintain water resistance.
Storage
Store the chest strap in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No heart rate reading | Dry electrodes, poor contact, low battery, out of range, incompatible device. | Moisten electrodes, adjust strap position, replace battery, move closer to monitor, ensure monitor is analog compatible. |
| Erratic or fluctuating readings | Insufficient moisture, interference from other electronic devices, loose strap, low battery. | Re-moisten electrodes, move away from interference sources, tighten strap, replace battery. |
| Skin irritation | Allergic reaction, strap too tight, poor hygiene. | Loosen strap, clean strap thoroughly after each use, discontinue use if irritation persists and consult a doctor. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | 20303 |
| Brand | Sigma |
| Color | Black |
| Material Type | Material |
| Compatible Devices | Computer (Analog Heart Rate Monitors) |
| Battery Type | 1 CR2 battery (included) |
| Item Weight | 70 Grams |
| Product Dimensions | 30 x 30 x 30 cm (packaging/approximate) |
| GTIN | 04016224203031 |
Warranty and Support
For information regarding warranty coverage and technical support, please refer to the documentation provided with your original purchase or visit the official Sigma website. Specific warranty terms may vary by region and retailer.
Note: This manual does not contain specific contact information for support. Please consult the manufacturer's official channels for the most up-to-date support details.
