View on Amazon
No-App Moisture Meters
Compare analog probes and basic digital LCD testers, and avoid app, hub, pairing, battery, and leave-in surprises before you buy.
Baldr WG021RF3 Wi-Fi Soil Moisture Meter: Real-time monitoring with Wi-Fi connectivity
Designed for the busy plant parent who wants to keep their garden thriving without constant checking, this RainPoint Wi-Fi Soil Moisture Meter is your go-to tool for monitoring soil conditions from anywhere. While many focus on basic gardening, this sensor offers a unique angle: it acts as a proactive plant health assistant, giving you peace of mind by alerting you before your plants show visible stress. For example, you might receive a notification about dry soil while you're at work, allowing you to adjust watering plans before your tomatoes wilt.
With its Wi-Fi connectivity and compatibility with the HomGar app, you get real-time updates on soil humidity and temperature, helping you make timely decisions. The two-way data integration lets you share access with family members, turning garden care into a collaborative effort. Insert the sensor into your soil for accurate readings, and use historical data to track trends and optimize your planting strategies over time. Note that it requires a separate hub or gateway for operation, ensuring seamless integration into your smart home setup.
Features
- Seamless integration for smart gardening
- Easy to use for accurate readings
- Access historical data for better plant care
- Family sharing for collaborative gardening
- Real-time monitoring with Wi-Fi connectivity
General specs
- Brand: Baldr
- Model: WG021RF3
- Seller: Amazon
- ID: B0D8JZL62F
- Dimensions: 46.0, 237.0, 75.0
- Connectivity: Wi-Fi
- Power Source: Battery
- OS Compatibility: Android, iOS
- Usage Environment: Outdoor
- Measured Parameters: Humidity, Temperature, Light
- Smart Home Compatibility: HomGar
- First listed by seller: 12/9/25
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
?
Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
No live offers captured right now
Check current availability on Amazon.
Offers updated: 6/3/26
Price History for seller Amazon
Shipping options
Delivery to 
Russia
Russia
Available
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Baldr WG021RF3 White Real-time monitoring with Wi-Fi connectivity
|
LINKSTYLE SAS981XRTH-GS-Z01(TY) Green
|
RainPoint SM-021-2024 White
|
Gaoducash Zigbee soil moisture meter-xiao
|
RainPoint HCS026FRF Green Real-time soil moisture monitoring via app
|
RISOON Solar-tuyang Black Solar-powered for wireless continuous operation
|
|
| Brand | Baldr | LINKSTYLE | RainPoint | Gaoducash | RainPoint | RISOON |
| Model | WG021RF3 | SAS981XRTH-GS-Z01(TY) | SM-021-2024 | Zigbee soil moisture meter-xiao | HCS026FRF | Solar-tuyang |
| Color |
|
|
|
|
|
|
| Rating |
|
|
|
|
|
|
| Price | $24.95 | $39.99 | $39.99 | $16.23 | $39.99 | $45.69 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 20, 2026 | Apr 29, 2026 | May 7, 2026 | May 20, 2026 | Apr 29, 2026 | Apr 29, 2026 |
| Dimensions | 46.0, 237.0, 75.0 | 35.1, 24.9, 74.4 | 46.0, 237.0, 74.9 | 25.4, 203.2, 25.4 | 2.54, 2.54, 2.54 | |
| Connectivity | Wi-Fi | Wi-Fi | Wi-Fi | Zigbee | Wi-Fi | Bluetooth, Wi-Fi |
| Power Source | Battery | Battery | Battery | Battery | Battery | Solar |
| OS Compatibility | Android, iOS | Android, iOS | Android, iOS | Android, iOS | ||
| Usage Environment | Outdoor | Indoor, Outdoor | Indoor, Outdoor | Indoor, Outdoor | ||
| Measured Parameters | Humidity, Temperature, Light | Soil Moisture, Temperature, Light | Soil Moisture, Temperature, Light | Light, Soil Moisture, Temperature | ||
| Smart Home Compatibility | HomGar | Amazon Alexa | Amazon Alexa, Google Assistant | Tuya | Amazon Alexa, Tuya, Smart Life | |
| Battery Type | AA | AAA | AAA | |||
| Humidity Accuracy | 1 | ±5% | 2, 3 | |||
| Temperature Range | -4, 185 | -4, 140 | -40, 85 | |||
| Sensor Configuration | External | External | External | |||
Baldr WG021RF3 White Real-time monitoring with Wi-Fi connectivity
$24.95
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.