Haldzemo

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When purchasing a product, price is the consumer's primary concern. At present, Haldzemo has 59 products for sale. Haldzemo products range in price from $9.99 to $18.88, and the average price of all the products is about $12.82. It's affordable for most consumers, and you can feel free to pick your favorite products.

You can confidently purchase Haldzemo products from the seller Haldzemo. The brand holds an average rating of 4.53, testifying to its excellent reputation.

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Last Updated: Jan 8, 2026

Haldzemo 1S 2S 3S 4S 5S 6S 7S 8S 1-8S Lithium Battery Capacity Indicator Module 4 Sections Blue LED Display Tester Li-po Li-ion (5 Pack)

Car Battery Testers

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Working voltage: 3-34V, working current: 5mA, working temperature: -20-50℃

Using Method: connect display board positive and negative port with tested battery positive and negative port, digital tube will display real-time battery electricity quantity.

Note: This model is not waterproof, the electronic components should be used in a dry environment.

Wide application fields: lithium battery

Four-level power display(Blue/Green optional)

Haldzemo Inductive Proximity Sensor M12 LJ12A3-4-Z/BX Normally Open Detection Approach Switch 4mm NPN NO 3 Wire DC 6V-36V (4 Pack)

Proximity Sensors Inductive Proximity Sensors

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Inductive proximity switch type: LJ12A3-4-Z/BX, 3 Wire NPN NO. Detecting Distance: 4mm, Diameter: 12mm.

Supply Voltage: 6-36VDC, Current Output: 300mA, Frequency: 500Hz.

Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).

When proximity switch is close to some target object, it will send out control signal.

It is widely used in machine, paper making, light industry for limiting station, orientation taking count, speeding trial ect.

Haldzemo Inductive Proximity Sensor SN04-N Normally Open Detection Approach Switch NPN NO with TL PL SN Bracket (Blue, 4 Pack)

Proximity Sensors Inductive Proximity Sensors

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Inductive Proximity Switch Type: SN04-N, 3 Wire NPN NO. Detecting Distance: 4mm. Supply Voltage: 5-30VDC, Current Output: 300mA.

LED working indicator: signal indicator, when sensing metal objects the light is on for normally open, the light is off for normally closed.

Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).

When proximity switch is close to some target object, it will send out control signal. Widely used for machine tool industry, frequency counters and other automatic control system, or you can use it for DIY 3D Printer.

You will get 4pcs inductive proximity switch + 4pcs SN Bracket

Haldzemo SN04-N2 NPN NC Inductive Proximity Sensor Normally Close Detection Approach Switch with SN Bracket (Blue, 4 Pack)

Proximity Sensors Inductive Proximity Sensors

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Inductive Proximity Switch Type: SN04-N2, 3 Wire NPN NC. Detecting Distance: 4mm. Supply Voltage: 6-30VDC, Current Output: 300mA.

LED working indicator: signal indicator, when sensing metal objects the light is on for normally open, the light is off for normally closed.

Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).

You will get 4pcs inductive proximity switch + 4pcs SN Bracket

Haldzemo Square Inductive Proximity Sensor SN04-P Normally Open Detection Approach Switch PNP NO with TL PL SN Bracket (Blue, 4 Pack)

Proximity Sensors Inductive Proximity Sensors

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Inductive Proximity Switch Type: SN04-P, 3 Wire PNP NO. Detecting Distance: 4mm. Supply Voltage: 5-30VDC, Current Output: 300mA.

LED working indicator: signal indicator, when sensing metal objects the light is on for normally open, the light is off for normally closed.

Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).

You will get 4pcs SN04-P inductive proximity switch + 4pcs SN Bracket

Haldzemo 1PC 3CH Digital Servo Tester ESC Checker CCPM Consistency Speed Controler + 2PCS 4 Cell AA Battery Holder Case with 2P JR Connector Terminal for Helicopter Car (HJ Servo Tester)

RC Servos

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4 Cell AA Battery Holder Case with JR connector, very easy and convenient to use it. AA batteries are not included.

Battery Holder Rated Voltage: 6V, Interface: JR Plug.

Button the Select (Note: the key switch function, circulation patterns) 1. S-1 manual mode (Manual) 2. S-2-bit mode (Neutral) 3. S-3 automatic mode (Automatic)

Keys pulse width: 1. 50H analog servo signal cycle 20us frequency 50Hz 2. 125H digital the steering gear a signal cycle 8us frequency 125HZ 3. 250H Digital Servo signal cycle 4us frequency 250Hz

Connect: the battery holder red wire is to connect with "+" of "Input" of the servo tester, and black wire is to connect with "-" of "Input".

Haldzemo M8 M12 M18 SN04 L-Shaped Straight I Type Mounting Iron Bracket for Photoelectric Switch Inductive Proximity Sensor (10 Pack, M18-L Type)

Hardware Brackets

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Bracket Type: M8/M12/M18, Material: Iron, Color: Silver.

M8 I Type Size: 59*16*2mm, Weight: 11g. M8 L Type Size: 34+39*16*2mm, Weight: 11g

M12 I Type Size: 73*20*2mm, Weight: 16g. M12 L Type Size: 38+38*20*2mm, Weight: 16g

M18 I Type Size: 87*26*2mm, Weight: 24g. M18 L Type Size: 43+47*26*2mm, Weight: 24g

Apply to photoelectric switch inductive proximity sensor

Haldzemo NJK-5002C Hall Effect Sensor M12 Proximity Switch NPN NO 3 Wires Detection Approach Switch 10mm Normally Open (4 Pack)

Hall Effect Sensors

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Hall Effect Sensor Proximity Switch Type: NJK-5002C, 3 Wire NPN NO. Detecting Distance: 10mm, Diameter: 12mm. Detection Object: Magnet

Shape: Cylindrical, Cable Length: 1.2M, Size: M12*1*40mm, Weight: 38g.

LED working indicator: signal indicator, when sensing magnet objects the light is on for normally open, the light is off for normally closed.

Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).

You will get 4pcs hall effect sensor proximity switch

Haldzemo 1.3 inch OLED Display Module I2C IIC 128x64 LCD Screen S H1106 12864 Compatible Arduino (2 Pack, Blue)

Single Board Computers Raspberry Pi Starter Kits

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1.3" OLED screen module 128*64 resolution, panel size: 35.4×33.5mm, Interface type: IIC interface

The I2C default address is 0x3C(on the back it says 0x78) (selectable to 0x7A by re-soldering a resistor)

1.3inch OLED self-luminous, no backlight. The main chip is S H1106, supports DC 3.3V to 5.0V

4pin Interface: GND: Ground, VCC: DC 3.3-5V, SCL: Serial Clock, SDA: Serial Data

Compatible Arduino Raspberry Pi ESP8266 ESP32

Haldzemo SN04-N2 NPN NC Inductive Proximity Sensor Normally Close Detection Approach Switch with SN Bracket (Blue, 2 Pack)

Proximity Sensors Inductive Proximity Sensors

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Inductive Proximity Switch Type: SN04-N2, 3 Wire NPN NC. Detecting Distance: 4mm. Supply Voltage: 6-30VDC, Current Output: 300mA.

NPN: common positive voltage, output negative voltage. PNP: common negative voltage, output positive voltage. NO: normally open. NC: normally closed.

Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).

LED working indicator: signal indicator, when sensing metal objects the light is on for normally open, the light is off for normally closed.

Haldzemo MAX7219 8x8 Dot Matrix LED Display Module 5V MCU Control LED Dot Matrix for Arduino Raspberry Pi (Blue, 4 Pack)

LED Segment Displays

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MAX7219 8x8 dot matrix common cathode LEDs, three color options: red, green, blue.

Operating voltage: 5V, MCU control

Size: 32*32*13mm, Weight:12g

With 4 fixing screw holes for easy installation, diameter 3mm.

Modules with input and output interfaces, support for cascading multiple modules.

Haldzemo 2.8 inch TFT LCD Module 320x240 SPI Serial ILI9341 Resistive Touch Screen with Touch Pen Compatible with Arduino STM32

Single Board Computers Raspberry Pi Starter Kits

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2.8" SPI TFT LCD Display Touch Panel 320x240 Pixels RGB Colorful Display LCD Screen

With Touch Pen, Support Resistive Touch Screen Function, Easy to use. Uses SPI serial bus, requiring only a few I/O pins to light up the display.

Designed With a SD Card Socket On the Back, Module Interface: 4-wire SPI interface, Display Color: RGB 65K color

Operation Voltage: 3.3V/5V, Active area: 43.2*57.6mm, PCB Size: 50*86mm

Widely used with many development boards to display temperature humidity, image, text, number etc.

Haldzemo 4.0" 480x320 SPI Serial Resistive LCD Touch Screen TFT Display Module ST7796S with Touch Pen Compatible with Arduino STM32

Single Board Computers Raspberry Pi Starter Kits

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4.0" SPI TFT LCD Display Touch Panel 480x320 Pixels RGB Colorful Display LCD Screen

With Touch Pen, Support Resistive Touch Screen Function, Easy to use. Uses SPI serial bus, requiring only a few I/O pins to light up the display.

Designed With a SD Card Socket On the Back, Module Interface: 4-wire SPI interface, Display Color: RGB 65K color

Operation Voltage: 3.3V/5V, Active area: 83.52*55.68mm, PCB Size: 108.04*61.74mm

Widely used with many development boards to display temperature humidity, image, text, number etc.

Haldzemo 3.5" 480x320 SPI Serial Resistive LCD Touch Panels TFT Display Module ILI9488 with Touch Pen Compatible with Arduino STM32

Single Board Computers Raspberry Pi Starter Kits

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3.5" SPI TFT LCD Display Touch Panel 480x320 Pixels RGB Colorful Display LCD Screen

With Touch Pen, Support Resistive Touch Screen Function, Easy to use. Uses SPI serial bus, requiring only a few I/O pins to light up the display.

Designed With a SD Card Socket On the Back, Module Interface: 4-wire SPI interface, Display Color: RGB 65K color

Operation Voltage: 3.3V/5V, Active area: 48.96*73.44mm, PCB Size: 56.34*98.00mm

Widely used with many development boards to display temperature humidity, image, text, number etc.

Haldzemo Hall Effect Sensor NJK-5002D NPN NC Detection Approach Switch 10mm M12 Proximity Switch with L Type Bracket (2 Pack)

Hall Effect Sensors

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Hall Effect Sensor Proximity Switch Type: NJK-5002D, 3 Wire NPN NC. Detecting Distance: 10mm, Diameter: 12mm. Detection Object: Magnet

Shape: Cylindrical, Cable Length: 1.2M, Size: M12*1*40mm, Weight: 38g.

LED working indicator: signal indicator, when sensing magnet objects the light is on for normally open, the light is off for normally closed.

Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).

You will get 2pcs NPN NC hall effect sensor proximity switch + 2pcs L Type Bracket

Haldzemo 0.96" OLED Display Module I2C IIC Serial 128X64 SSD1306 LCD Screen VCC GND SCL SDA (2 Pack, Yellow Blue)

Single Board Computers Raspberry Pi Starter Kits

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0.96 inch OLED screen module 128*64 resolution, panel size: 28*27mm, Interface type: IIC interface

OLED self-luminous, no backlight. The main chip is SSD1306, supports DC 3.3V to 5.0V

This OLED screen module is small and suitable for applications that require a compact display solution

Interface: VCC: DC 3.3-5V, GND: Ground, SCL: Serial Clock, SDA: Serial Data

Compatible Arduino Raspberry Pi ESP8266 ESP32

Haldzemo 0.28 Inch Three-Line Voltage Meter Mini LED Digital Voltmeter Gauge (Blue, 8 Pack)

Voltage Testers

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3-wire digital voltmeter detection voltage: DC 0~100V, working voltage: 4~30V (with reverse connection protection function).

Note: The three-wire voltage range of 0-100V, can also be used for the second line but the voltage should be within 30V.

It can work with 5V, 9V, 12V and 24V. Adjustable voltage resistance, Rotate clockwise to lower the voltage.

The display color of digital voltmeter: blue.

Size: 30*10*8mm, weight: 5g. Quantity: 8pcs.

Haldzemo TEC1-12706 Semiconductor Refrigeration Tablets 30W 12V 3A 40x40MM Heatsink Thermoelectric Cooler Cooling Peltier Plate Module (6 Pack)

Heatsinks

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Model: TEC1-12706, Size: 40*40*3.5mm, Weight: 22g

Working Current: 3A (rated 12V), Refrigeration Power: Qcmax 30W

The side printed with TEC1-12706 is the cooling side, another is the heating side.

Red wire is positive, black wire is negative. Test method: Install the red and black wires of the refrigeration tablet on both ends of 1 cell battery, if you can feel one side is slightly cold and one side is slightly hot, it means that the refrigeration tablet is good!

Note: Please make sure you have installed with a heat radiator on the heating side. Otherwise the overheating will burn it out. When you installing the radiator, make sure to scribble some thermal grease on the surface.

Haldzemo M8 M12 M18 SN04 L-Shaped Straight I Type Mounting Iron Bracket for Photoelectric Switch Inductive Proximity Sensor (10 Pack, M8-L Type)

Hardware Brackets

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Bracket Type: M8/M12/M18, Material: Iron, Color: Silver.

M8 I Type Size: 59*16*2mm, Weight: 11g. M8 L Type Size: 34+39*16*2mm, Weight: 11g

M12 I Type Size: 73*20*2mm, Weight: 16g. M12 L Type Size: 38+38*20*2mm, Weight: 16g

M18 I Type Size: 87*26*2mm, Weight: 24g. M18 L Type Size: 43+47*26*2mm, Weight: 24g

Apply to photoelectric switch inductive proximity sensor

Haldzemo 0.96 Inch OLED Display Module 3.3V I2C IIC 128X64 SSD1306 Compatible Arduino Raspberry Pi STM32 (2 Pack, Yellow Blue)

Single Board Computers Raspberry Pi Starter Kits

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0.96 inch OLED screen module 128*64 resolution, panel size: 28*27mm, Interface type: IIC interface

OLED self-luminous, no backlight. The main chip is SSD1306, supports DC 3.3V to 5.0V

This OLED screen module is small and suitable for applications that require a compact display solution

Interface: GND: Ground, VCC: DC 3.3-5V, SCL: Serial Clock, SDA: Serial Data

Compatible Arduino Raspberry Pi ESP8266 ESP32

Haldzemo FAQs

Is Haldzemo Legit?

Yes, Haldzemo is a legitmate brand on Amazon. After conducting a comprehensive analysis of 11 customer reviews for Haldzemo products on Amazon, we have determined its average rating. With a strong performance and good quality, Haldzemo has received an average rating of 4.53 from numerous buyers, indicating that Haldzemo are trustworthy and live up to their claims. Therefore, it is safe to make purchases from Haldzemo on Amazon.

Amazon has strict policies and safety measures in place that ensure only legitimate sellers and products are allowed on their platform. It also provides a secure payment gateway and offers buyer protection, ensuring your transaction is safe. In the unlikely event that there's an issue with your purchase, Amazon's customer service and return policies are designed to protect your interests.

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