4-Channel Level Shifter Module, 3.3V/5.0V Logic Level Converter. Connect 3.3 V devices to 5V sensors and vice versa with this level shifter breakout board.
eBay
Water Level Gauge 0-5m/0-10m/0-15m/0-20m Liquid Water Level Meter Digital Water Level Gauge 304SS Submersible Water Level Meter
Aliexpress UK
This level converter also works with 2.8V 8V devices. Each level converter has the capability of converting 4 pins on the high to 4 pins on the low with two inputs and two outputs provided for each. level shifter with 4 channels between high and low.
eBay
Water Level Sensor 4-20mA 0-10V 0-5V RS485 Water Level Transmitter 0-5m Liquid Level Sensor Transmitter 4-20mA Level Sensor
Aliexpress UK
HiLetgo 10pcs 4 Channels IIC I2C Logic Level Converter Bi-Directional 3.3V-5V Shifter Module for Arduino. Manufacturer : HiLetgo. Manufacturer: HiLetgo. If you’ve ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be.
eBay
Radar Level Gauge 4-20mA LCD Radar Level Gauge RS485 0-20m Water Level Sensor DC 24V Radar Level Meter
Aliexpress UK
5x Bi-Directional 4 Channel Logic Level Shifter Converter 3.3V 5V Arduino ESP Pi. Condition is New. Dispatched with Royal Mail 2nd Class Large Letter.
eBay
5/10pcs Mini Spirit Square Bubble Level Protractor Precision Level Cylinder Level Horizontal Bead Level Measuring Tools
Aliexpress UK
Near RS232 character end is RS232 level, close to TTL character end TTL level. When MCU and 3.3 V device module is connected, 5 V and 3.3 V TTL level mutual transfer is very convenient. 5 Pieces Logic Level Converter Bi-Directional Module.
eBay
5/10pcs Mini Spirit Square Bubble Level Protractor Precision Level Cylinder Level Horizontal Bead Level Measuring Tools
Aliexpress UK
3A connected 3V system. 3B connected 3V system. GND connected 3V system GND. Bi-directional logic level converter works with 2.8V and 1.8V devices. 1 piece Logic Level Converter Module. 5A connected 5V system.
eBay
2Pcs Stainless Steel Level Holder Universal Heavy-Duty Metal Level Stand for Secure Storage, Locking Level Stand for Workshop, Garage, Truck, Van Level Storage Hook
Aliexpress UK
The level shifter circuit does not require a ground connection to either device, so there are no ground pins on the board. The two devices being connected through the level shifter must still share a common ground.
eBay
Pole Bubble Level Tower Ruler Level Tower Ruler Rod Level Aluminum Alloy Right Angle 90 Degree Pole Bubble Level for Surveying
Aliexpress UK
This chip solves the problem of how to interface 3.3V logic devices to a 5.0V logic chip such as the Arduino. The 74LVC245 is designed so that even when it runs at 1.8V, it still happily accepts 5V signals in one pin and converts it to a lower logic level on the opposite pin.
eBay
5/10pcs Mini Spirit Square Bubble Level Protractor Precision Level Cylinder Level Horizontal Bead Level Measuring Tools
Aliexpress UK