The DHT11 is a basic low-cost digital humidity and temperature sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and provides a digital signal on the data pin. It’s fairly simple to use but requires careful timing to grab data, you can only get new data from it once every 2 seconds.
This module is an implementation of the popular low-cost DHT11 sensor. It comes with proper headers to make it even easier to connect to any exposed pins of your development board.
Features :
Operating voltage: 3V ~ 5V.
Humidity measurement ranges from 20%~80% with ±5% accuracy.
Temperature measurement range 0°C ~ 50°C with ±2°C accuracy.
The photo-reflector consists of a GaAs infrared light-emitting diode and a silicon planar phototransistor. When an object is placed right in front of the sensor, the reflective infrared light emitted from the emitter will be picked up by the phototransistor and then output logical HIGH or logical LOW according to the distance between the reflection surface and the sensor.
Features :
Using a wide voltage LM393 comparator.
The working voltage of 3.3V-5V.
Maximum output sink current 10mA.
Operating range 0~5mm.
Output is active low i.e an interruption produces a low output (LED is activated).
Two (Ø 3.5mm) mounting holes for easy installation.
AC/DC power filter is a bidirectional passive Low pass filter useful in filtering the output voltages of power supplies or transformers (not line input) such as filtering output 24VAC of a transformer. For AC Line filtration use our AC Line Filter.
Features :
Maximum operating voltage: AC250V / DC400V.
Maximum Current: 3A.
Cut-off frequency: 5KHz.
Operating temperature: -40 to 85°C.
Four (Ø 3.5mm) mounting holes for easy installation.
This module allows for safe and easy communication between devices operating at different logic levels. Typically 3.3V and 5V.
Features :
8-channel bi-directional logic converter suitable for bi-directional buses such as I²C, as well as uni-directional such as SPI and TTL serial communication.
DB9 male socket on PCB to block terminals and pin header facilitates solderless connection to standard serial connector DB9 and is also suitable for breadboard test applications.
Features :
DB9 pins are routed to pin headers and screw clamp terminals.
Both terminals are labeled according to the DB9 pin number to which they are routed.
Pin header pitch distance 2.54mm.
Screw terminal pitch distance 3.5mm.
Two (Ø 3.5mm) mounting holes for easy installation.
DB9 female socket on PCB to block terminals and pin header facilitates solderless connection to standard serial connector DB9 and is also suitable for breadboard test applications.
Features :
DB9 pins are routed to pin headers and screw clamp terminals.
Both terminals are labeled according to the DB9 pin number to which they are routed.
Pin header pitch distance 2.54mm.
Screw terminal pitch distance 3.5mm.
Two (Ø 3.5mm) mounting holes for easy installation.
This module allows for safe and easy communication between devices operating at different logic levels. Typically 3.3V and 5V.
Features :
6-channel bi-directional logic converter suitable for bi-directional buses such as I²C, as well as uni-directional such as SPI and TTL serial communication.
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