Compared to DS18B20, LM35, and other common temperature sensors, the MCP9808 is one of the more accurate temperature sensing options, with a typical accuracy of ±0.25°C and maximum accuracy of ±0.5°C over the sensor’s -40°C to +125°C range and precision of +0.0625°C.

The MCP9808 comes with user-programmable registers that allow user-selectable settings such as Shutdown or Low-Power modes and the specification of temperature Alert window limits and critical output limits. When the temperature changes beyond the specified boundary limits, the MCP9808 outputs an Alert signal. The user has the option of setting the Alert output signal polarity as an active-low or active-high comparator output for thermostat operation, or as a temperature Alert interrupt output for microprocessor-based systems.

These features make the MCP9808 ideal for sophisticated, multi-zone, temperature-monitoring applications.

Features:

APPLICATIONS

SPECIFICATION

This is NTC MF52 100K ohm 3950 Thermistor 1%. These thermistors are widely used as electronic circuit components for instrument line temperature compensation and temperature difference cold junction temperature compensation, etc.
High Sensitivity: High sensitivity and wide operating temperature range.
MF52 100K ohm 3950 thermistors are able to measure the gap temperature than other thermometers can’t measure.
and it is very easy to use to process into complex shapes.

Specifications and Features:

1. Model: MF52 3950
2. Resistance Value: 100K
3. Accuracy: 1%
4. Small Size
5. Wide operating temp range

Package Includes:

1 x NTC MF52 100K ohm 3950 Thermistor 1% (Pack of 5)

The AHT20 is a high-precision but low-cost temperature and humidity sensor, which is equipped with an improved MEMS semiconductor capacitive humidity sensor element. It features a standard I2C interface and a wide voltage supply of 2V-5V. And with the simple peripheral circuit, it performs stably even in harsh environments in the measuring range of -40℃ ~ ＋85℃.

This sensor can be widely used for measuring the environmental temperature and humidity of home electronic equipment, the temperature and humidity of automobiles, and so on.

Features:

This W3230 AC110-220V Digital Temperature Controller Microcomputer Thermostat Switch features an NTC 10K waterproof temperature sensor. When the temperature of the object reaches a certain set temperature at that time the microcomputer switches on the relay, in turn switching on the device connected to the output terminals.

Applications:

1. Outdoor use uses involving potential chemical contamination or electrical interference
2. Nuclear energy control systems, combustion systems, railroad systems, aviation systems
3. Medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations
4. Systems, machines, and equipment that could present a risk to life or property
5. Domestic freezer, water tanks, refrigerator, industrial chiller, steamer, industrial equipment, and another temperature-controlled system

Features:

1. Mini temperature controller.
2. With a clear LED display for better readability.
3. Wide temperature measuring range.
4. Heating or cooling control.
5. All parameters set can be saved after a short circuit.
6. Relay output.
7. High Control precision 0.1 centigrade

Package Includes:

1 x W3230 AC110-220V Digital Temperature Controller Microcomputer Thermostat Switch

The DHT-11 Digital Temperature And Humidity Sensor is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin (no analog input pins needed).

Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so in your code please use sensor reading interval at 2 seconds or more. Compared to the DHT22, this sensor is less precise, less accurate and works in a smaller range of temperature/humidity.

But despite its disadvantages over DHT22, it is smaller and less expensive sensor for temperature and humidity measurement.

Note: This package does not include Arduino board, you have to buy it separately.

Features :

1. Low power consumption.
2. Relative humidity and temperature measurement
3. All calibration, digital output
4. Excellent long-term stability
5. No additional components
6. Long distance signal transmission
7. Ultra-low power
8. 4-pin package
9. Completely interchangeable
10. Humidity measuring range: 20%~90%RH(0~50 degree (temperature compensation).
11. Temperature measuring range: 0~+50degree.
12. Humidity measurement accuracy: ±5.0%RH.
13. Temperature measurement accuracy: ±2.0degree.

Packages Includes:

1 x DHT-11 Digital Temperature And Humidity Sensor- Normal Quality

A Type K thermocouple refers to any temperature sensor containing Chromed and Alumel conductors, that meets the output requirements as stated in ANSI/ASTM E230 or IEC 60584 for Type K thermocouples. This may be an immersion sensor, a surface sensor, wire, or another style of sensor or cable.

Whereas a J Type Thermocouple is made up of iron and constantan, K type Thermocouples are composed of a nickel/chromium alloy (chrome) and a nickel/aluminum alloy (alumni) which gives them much better protection against oxidation and acidity than the iron limbs of the Type J

Type K consists of two metal alloys Chromel (90% Nickel, 10% Chromium) and also Alumel (95% Nickel, 2% Manganese, 2% Aluminium and 1% Silicon). Due to the thermocouple having a Nickel base; this means that it has good corrosive resistance-meaning that it can be widely used in many applications and situations.

Specifications:

1.  Tolerance: ± 1.5
2. Operating temperature: up to to 2000°C
3. Operating Voltage(VDC): 3 to 5.5
4. Internal integrated cold junction compensation circuit;
5. With a simple three serial SPI interface;
6. Temperature signal can be converted into 12-bit digital
7. Embedded thermocouple break detection circuitry.
8. High impedance differential inputs

Packages Includes: 

1 x K-type Thermocouple