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AJMRTC 2Pcs LM393 12V Soil Moisture Relay Module, Humidity Detection Sensor Probe with Relay Switch for Automatic Plant Watering Irrigation System
- - LM393 comparator chip, stable soil humidity detection with relay switch output
- - 12V DC powered design, directly controls water pumps for automatic irrigation
- - Onboard potentiometer to freely set the soil moisture trigger threshold
- - Built-in indicator LEDs for power status and moisture trigger reminder
- - Nickel-plated probe, corrosion resistant for long-time burying in soil
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Overview
Specs
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AJMRTC set contains 2 pieces of LM393 soil moisture relay sensor modules for automatic watering projects. It uses a two-prong soil probe to detect soil conductivity and judge humidity. The LM393 comparator processes the signal and triggers the integrated relay when the soil moisture drops below your preset threshold, which can switch on the water pump automatically. You can adjust the trigger point easily via the onboard potentiometer. Power LED and trigger LED show working status clearly for quick troubleshooting. The metal probe adopts anti-rust nickel plating to extend service life in damp soil. It is widely used for potted plants, vegetable gardens, greenhouses and smart farm irrigation DIY systems.
Specifications:
- Chip: LM393 Voltage Comparator
- Supply Voltage: DC 12V
- Output: Relay Switch Signal
- Adjustable Threshold: Via Onboard Potentiometer
- Probe Material: Nickel-plated Metal
- Indicator: Power LED + Trigger LED
- Relay Contact Rating: 10A 250VAC / 10A 30VDC
- Quantity: 2 Pieces
- Application: Automatic Irrigation, Plant Humidity Monitoring, Garden Watering Control
- Operating Temperature: -20 ~ +70
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by ConnectFlow USA Return Policy
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