DC Digital Voltmeter Head
Price range: $1.12 through $1.921pcs
| Dimensions | N/A |
|---|---|
| Brand |
easyelecmodule |
0.28-Inch 2-Wire Voltage Display Module
0.28-Inch 3-Wire Voltage Display Module
Technical Parameters:
Basic Performance Parameters of This Voltmeter:
0.28 inch two-wire vs. three-wire difference
| Comparison Dimension | two-wire | three-wire |
|---|---|---|
| Core Highlights | 1. Automatic precision adjustment (0.01V accuracy below 10V, 0.1V accuracy above 10V), optimizing nixie tube display resources; 2. 2-wire connection, with measurement and power supply sharing the same line for simple wiring. | 1. Supports dual connection modes (2-wire + 3-wire) for strong adaptability; 2. Wider voltage measurement range (up to 100V) for diverse application scenarios; 3. More comprehensive labeling of environmental adaptability parameters. |
| Connection Mode | Only supports 2-wire connection | Supports two connection modes: 2-wire and 3-wire |
| Operating Voltage Range | DC 3.50-30.0V (shares the same range with measurement range) | 2-wire: DC 3.5-40V; 3-wire: DC 4.0-40V |
| Measurement Range | DC 3.50-30.0V | 2-wire: DC 0.0-40V; 3-wire: DC 0.0-100V |
| Measurement Accuracy | 1% (±1 digit), with automatic precision adjustment (0.01V below 10V, 0.1V above 10V) | 1% (±1 digit), no automatic adjustment function, operating at fixed precision |
| Operating Current | Not specified | ＜20mA |
| Overall Dimension | 30MM×11MM×8.8MM (including mounting lug dimensions) | 30MM×11MM×8.8MM (including mounting lug dimensions) |
| Mounting-related Dimensions | Mounting dimension: 26MM (center distance between two mounting lugs); Cutout dimension: 22.7MM×10.2MM (for nixie tube) | Mounting dimension: 26MM (center distance between two mounting lugs); Cutout dimension: 22.7MM×10.2MM (for nixie tube) |
| Display Configuration | 3-digit 0.28-inch LED nixie tube; Multiple color options (red/green/blue/yellow); Refresh rate: approx. 1 time/second | 3-digit 0.28-inch LED nixie tube; Multiple color options (red/green/blue/yellow); Refresh rate: approx. 1 time/second |
| Weight | Less than 4g per unit | 4g per unit |
| Environmental Adaptability Parameters | Only operating temperature specified: -10℃~65℃ | Operating temperature: -10℃~+65℃; Operating humidity: 10%~80% (no condensation); Operating air pressure: 80~106KPA; Direct sunlight prohibited |
| Protection Function | 2-wire connection with reverse polarity protection (no damage when connected reversely) | Both 2-wire and 3-wire connections with reverse polarity protection (power supply polarity protection circuit) |
| Applicable Scenarios | Precision monitoring in low-voltage (3.5-30V) scenarios, such as small electronic devices and low-voltage circuits, where simplified wiring and high-precision reading for low voltage are required | Flexible monitoring in medium and high-voltage (0-100V) scenarios, such as electric vehicles, industrial equipment, and large-scale power supplies, where different wiring methods and adaptation to complex environments are needed |
0.36-Inch 2-Wire Voltage Display Module
Features: Automatic precision adjustment. Can measure accurately to 0.01V below 10V, and to 0.1V above 10V. Fully utilizes the display resources of the digital tube.
Basic performance parameters of this voltmeter are as follows:
Dimensions: 33MM15MM9.5MM (including mounting ears)
Mounting size: 28MM (distance between centers of mounting ear holes)
Panel cutout size: 22.7MM*14MM (length and width of the digital tube)
Range: DC 3.50-30.0V, 2-wire connection (with reverse connection protection, will not burn if connected reversely)
Display: Three-digit 0.36-inch LED digital tube
Weight: Less than 5 grams per unit
Display color: Red/Green/Blue
Refresh rate: Approximately 1 second per update
Measurement accuracy: 1% (±1 digit)
Operating temperature: -10°C to 65°C
Power supply voltage: DC 3.50-30.0V (shared with measurement lines)
0.36-Inch 3-Wire Voltage Display Module
Technical Parameters:
2-wire operating voltage: 3.5~30V (with reverse connection protection)
2-wire detection voltage: 0.0~30V
3-wire operating voltage: 3.5~30V (with reverse connection protection)
3-wire detection voltage: 0.0~30V
Operating current: <20mA
Display method: 0.36" LED (color options: red, blue, green)
Operating Conditions:
Operating temperature: -10 to +65°C
Operating humidity: 10~80% (no condensation)
Operating air pressure: 80~106 kPa
Sunlight exposure: No direct exposure
Basic performance parameters of this voltmeter are as follows:
Dimensions: 33mm x 15mm x 9.5mm (including mounting ears)
Mounting size: 28mm (distance between centers of mounting ear holes)
Panel cutout size: 22.7mm x 14mm (length and width of the digital tube)
Range: DC 3.50-30.0V, 2-wire connection (with reverse connection protection, will not burn if connected reversely)
Display: Three-digit 0.36-inch LED digital tube
Weight: 5 grams per unit
Display color: Red/Green/Blue (color options available)
Refresh rate: Approximately 1 second per update
Measurement accuracy: 1% (±1 digit)
Operating temperature: -10°C to 65°C
Power supply voltage: DC 3.50-30.0V
0.28 inch two-wire vs. three-wire difference
| Comparison Dimension | 2-Wire | 3-Wire |
|---|---|---|
| Connection Modes | Only supports 2-wire connection (single connection mode) | Supports both 2-wire and 3-wire connections (dual flexible modes) |
| Electrical Performance | - Operating voltage: DC 3.50-30.0V (shares line with measurement) - Detection range: DC 3.50-30.0V |
- 2-wire mode: Operating voltage DC 3.5-30V; Detection range DC 0.0-30V - 3-wire mode: Operating voltage DC 3.5-30V; Detection range DC 0.0-30V - Power supply voltage: DC 3.50-30.0V |
| Operating Current | Not specified | Clearly marked: ＜20mA |
| Physical & Installation Specs | - Dimensions: 33MM×15MM×9.5MM (including mounting ears) - Mounting size: 28MM (center distance of mounting ear holes) - Panel cutout size: 22.7MM×14MM - Weight: ＜5g per unit |
- Dimensions: 33mm×15mm×9.5mm (including mounting ears) - Mounting size: 28mm (center distance of mounting ear holes) - Panel cutout size: 22.7mm×14mm - Weight: 5g per unit |
| Display Configuration | - 3-digit 0.36-inch LED digital tube - Display colors: Red/Green/Blue - Refresh rate: ~1 time/second |
- 3-digit 0.36-inch LED digital tube - Display colors: Red/Blue/Green (options available) - Refresh rate: ~1 time/second |
| Protection Function | 2-wire connection with reverse connection protection (no damage if connected reversely) | Both 2-wire and 3-wire connections have reverse connection protection (comprehensive safety coverage) |
| Environmental Adaptability | Only operating temperature specified: -10°C to 65°C | More comprehensive parameters: - Operating temperature: -10°C to +65°C - Operating humidity: 10~80% (no condensation) - Operating air pressure: 80~106 kPa - Sunlight exposure: No direct exposure |
| Measurement Accuracy | 1% (±1 digit), with automatic precision adjustment (0.01V below 10V; 0.1V above 10V) | 1% (±1 digit), no automatic precision adjustment (fixed precision standard) |
| Core Advantages | 1. Automatic precision adjustment optimizes low-voltage fine measurement 2. Simple 2-wire shared-line design reduces wiring complexity |
1. Dual connection modes adapt to diverse installation scenarios 2. Comprehensive environmental adaptation parameters for complex working conditions 3. Clear operating current specification for easier system matching |
| Applicable Scenarios | Low-voltage (3.50-30.0V) scenarios requiring fine measurement (e.g., small electronic devices, low-voltage circuits) with simple wiring needs | Scenarios needing flexible connection modes (2-wire/3-wire switchable) under 0-30V, especially complex environments with humidity/pressure constraints (e.g., industrial control panels, multi-device power monitoring) |
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
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