Double Waterproof temperature and humidity sensor SHT20 sht30 sensor probe SHT-77 soil sensor for flower nursery
1, imported sensor.
2, all with 10k pull-up resistor and 0.1uf filter capacitor
3, have done all double waterproofing.
4, 100% power before the factory aging, testing.
5, Ways of Connection: Brown --- VCC Black --- GND Yellow --- DATA Blue --- CLK
Second, product description
This section of the air temperature and humidity sensors, the overall double waterproof, thoroughly prevent condensation damage. Note: Even if buried in the soil, the sensor measures the relative humidity of the air in the soil, not the soil moisture.
Model: SHT-77
Sensor length: 77mm
Length: default 500mm
Sensor: sht-10
Shipping list
1, SHT-77 temperature and humidity sensor 1pcs
1, this sensor can measure soil temperature and humidity?
A: The definition of soil moisture is to take one kilogram of soil samples, thorough drying, reduced weight (weight of water) and 1 kg of the ratio becomes soil moisture.
Relative humidity is defined as the percentage of saturated humidity absolute humidity and current temperature current temperature.
Fully air humidity with soil moisture is not a concept, nor is it an order of magnitude, while 10% soil moisture soil humidity of the air is already 100% up.
This sensor chip is sht10 or sht20, this chip is produced by the Swiss company air temperature and humidity sensor for measuring the relative humidity of the air. This sensor through a special treatment, long buried in the soil is not damaged, even if charged again boil the water will not be damaged, when faced with larger soil moisture, soil air humidity will long be 100%, measured on meaningless.
2, this sensor is soaked in water or condensation or buried in the earth whether damage?
A: We all were encapsulated sensor potting process, even with long-term immersion in water power will not be damaged, putting to dry the humidity is still normal acquisition.
3, sensor measurements after potting whether there will be an error?
A: Some manufacturers of packaged non-professional probe will have the following questions:
(1) Potting moisture absorption, especially in high humidity situations, once the increase of humidity does not drop down, because the potting lived in the reservoir water.
(2) After soldering, without making a resurgence treatment (many manufacturers even heard of the word), temperature and humidity cause large error.
(3) with temperature encapsulants, potting layer cracks caused by oxidation time, after dew drop caused by electrophoresis in the surface of the circuit board to form a fault.
We also have other models on stock
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Payment terms
1. TT
2. alipay
3. western union
Warranty and return policy
1. our product has been carefully inspeated by us. So we are pleased to offer our buyer satisfaction.
2. If the items are defective. pls informed us within 3 days of delivery. Pls contact your salesperson before returning the products. We will either replacement or refund upon receupt the defective item. Customers are responsible for the return shipping cost.
3.You can return the goods to us within the warranty day if the goods was broken.
4. If the goods are damaged due to the transportation process,we do not have responsibility,but we will try our best to help you to get the compensation from the transport company .
5. After getting the returned item, we will refund the customer at the item's price ( excluding the shipping costs to and from )
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