A21-V1.0
Small Blind-Zone Waterproof Ultrasonic Sensor, Multi-Output
Waterproof ultrasonic sensor with a 3 cm blind zone and 3-500 cm range, five range levels, same-frequency interference filtering, IP67 and UART, PWM, RS485, IIC or switch output.
- Range
- 3–500 cm
- Accuracy
- 1+(S*0.3%) cm
- Output
- UART, PWM, RS485, IIC, switch
- Blind zone
- 3 cm
Features
- 3.3–24 V supply
- Single- or dual-angle versions
- Data output as fast as 13 ms
- Five-level noise reduction for battery, USB and switching supplies
- Operating temperature -25 to +65 °C
Typical applications
Full specifications
PDF A21-V1.0 Datasheet| IP rating | IP67 |
|---|---|
| Operating temperature | -25 to +65 °C |
| Default baud rate | 115200 bps |
| Fastest data output time | 13 ms |
| Sleep power consumption | <=5 uA |
| Single-angle settings | 40 / 45 / 55 / 65° |
| Dual-angle horizontal settings | 45 / 50 / 55 / 65° |
| Dual-angle vertical settings | 60 / 65 / 70 / 80° |
| Operating voltage | 3.3–24 V |
| Standby current (UART controlled) | ≤10 uA |
| Standby current (PWM) | ≤10 uA |
| Average operating current (UART auto) | ≤6 mA |
| Average operating current (UART controlled) | ≤6 mA |
| Average operating current (PWM) | ≤6 mA |
| Average operating current (switch) | ≤6 mA |
| Average operating current (RS485) | ≤10 mA |
| Average operating current (IIC) | ≤10 mA |
| Blind zone | 3 cm |
| Flat-object measuring range | 3–500 cm |
| Output response time (UART auto) | <140 ms |
| Output response time (UART controlled) | 13–140 ms |
| Output response time (PWM) | <15 ms |
| Output response time (switch) | 300–1500 ms |
| Output response time (RS485) | 15–750 ms |
| Output response time (IIC) | 100–140 ms |
| Power-on working time (UART auto) | ≤1000 ms |
| Power-on working time (UART controlled) | ≤1000 ms |
| Power-on working time (PWM) | ≤1000 ms |
| Power-on working time (switch) | ≤1000 ms |
| Power-on working time (RS485) | ≤1000 ms |
| Power-on working time (IIC) | ≤1000 ms |
| Working cycle (UART auto) | 140 ms |
| Working cycle (UART controlled) | Controlled ms |
| Working cycle (PWM) | Controlled ms |
| Working cycle (switch) | 100 ms |
| Working cycle (RS485) | Controlled ms |
| Working cycle (IIC) | Controlled ms |
| Auto | |
| Output mode | UART auto |
| Output mode (UART controlled) | Controlled |
| Output mode (PWM) | Controlled |
| Auto | |
| Output mode | Switch |
| Output mode (RS485) | Controlled |
| Output mode (IIC) | Controlled |
| Accuracy at room temperature | 1+(S*0.3%) cm |
| Temperature compensation | Compensated |
| Single angle | 40–65 ° |
| Dual angle, horizontal | 40–65 ° |
| Dual angle, vertical | 60–80 ° |
| Wiring | |
| Cable specification | 2464 4C*24AWG, black PVC outer sheath, cores red/black/yellow/white, OD 4.0 |
| Dimensions | |
| Cable length (sensor to M11-4P waterproof male connector, as drawn) | 120±10 mm |
| Extension cable length (to M11-4P waterproof female / terminal, as drawn) | 150±10 mm |
| M11-4P connector length | 33 mm |
| Operating voltage | 3.3-24 V |
| Output | UART / PWM / RS485 / IIC / switch output |
| Measuring range | 3-500 cm |
Questions about the A21-V1.0
What is the range of the A21-V1.0?
The A21-V1.0 small blind-zone waterproof ultrasonic sensor, multi-output is specified with a range of 3–500 cm.
What is the accuracy of the A21-V1.0?
The A21-V1.0 small blind-zone waterproof ultrasonic sensor, multi-output is specified with a accuracy of 1+(S*0.3%) cm.
What is the output of the A21-V1.0?
The A21-V1.0 small blind-zone waterproof ultrasonic sensor, multi-output is specified with a output of UART, PWM, RS485, IIC, switch.
Where can I get the A21-V1.0 datasheet?
The A21-V1.0 datasheet is a free PDF on this page, with the full specification table. For drawings in CAD format or a custom version, contact DWIN sales.
