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MAX7219 Dot Matrix 8x32 LED Display Module + DuPont Cable
In-Stock
MAX7219 Dot led Matrix 8x32 Control LED Display Module
A single module can drive a 8x8 dot matrix common cathode
Operating Voltage: 5V
Dimensions: 12.8X12.8X1.3cm/
Fixing screws with 64 holes with a diameter 3mm
Module with input and output interfaces, support for cascading multiple modules
Relay 1 Channel 5V High-Low Trigger Relay
In-Stock
1 Channel 5V Relay Module Board Shield for Arduino with Optocoupler Support High and Low Level Trigger
Maximum load: AC 250V/10A, DC 30V/10A
SMD optocoupler isolation, strong driving ability, stable performance; trigger current 5mA
The module voltage 5V
The module can be set high or low triggered by jumper
DS18B20 Stainless Steel Water Temperature Sensor Waterproof
In-Stock
DS18B20 Stainless Steel Encapsulated Temperature Sensor Waterproof

With high quality stainless steel tube encapsulation,the item is waterproof, moistureproof, rust-proof.
Sealing with high thermal conductivity sealant to guarantee high sensitivity and the minimum temperature delay of the temperature sensor.
Every probe is tested strictly to ensure it works normally.

Microphone Sensor AVR PIC Sound Detection
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High Sensitivity Microphone Sensor AVR PIC Sound Detection Module
The module has 2 outputs: AO, analog output, real-time output microphone voltage signal; DO, when the sound intensity reaches a certain threshold, it outputs high and low level signals, [threshold-sensitivity can be adjusted by potentiometer]