一、HD28The main parameters of carbon monoxide sensors：
| 1 | length | 29mm±0.2mm |
| 2 | height | 20mm±0.2mm |
| 3 | The diameter of the body is | 16.5mm±0.2mm |
| 4 | component feet length | 3.5mm±0.2mm |
| 5 | component feet distance | 29mm±0.2mm |
| 6 | Both feet spacing | 7.2mm±0.2mm |
| 7 | distance PCB board height | 16.5mm±0.2mm |
| 8 | Testing accuracy | < 2% |
| 9 | detection range | 0-1000 |
| 10 | output current | 1-2.5 nA/ppm |
| 11 | response time | < 50 S |
| 12 | Humidity of working humidity | 5 - 99% RH |
| 13 | Repeatability | 1% F.S |
| 14 | lag | 1% F.S |
| 15 | drift | 1 |
| 16 | sensitivity | 1 |
| 17 | Protection Level | IP55 |
| 18 | Working temperature | -15℃--+60℃ |
| 19 | net weight | 10grams |
| 20 | years of service life | 10years |
二、HD50The main parameters of carbon monoxide sensors：
| 1 | length | 51mm±0.2mm |
| 2 | height | 20mm±0.2mm |
| 3 | The diameter of the body is | 16.5mm±0.2mm |
| 4 | component feet length | 3.5mm±0.2mm |
| 5 | component feet distance | 51mm±0.2mm |
| 6 | Both feet spacing | 7.2mm±0.2mm |
| 7 | distance PCB board height | 16.5mm±0.2mm |
| 8 | Testing accuracy | < 2% |
| 9 | detection range | 0-1000 |
| 10 | output current | 1-2.5 nA/ppm |
| 11 | response time | < 50S |
12 | Humidity of working humidity | 5 - 99% RH |
| 13 | Repeatability | 1% F.S |
| 14 | lag | 1% F.S |
| 15 | drift | 1 |
| 16 | sensitivity | 1 |
| 17 | Protection Level | IP55 |
| 18 | Working temperature | -15℃--+60℃ |
| 19 | net weight | 15grams |
| 20 | years of service life | 10years |
三、HD28 & HD50Carbon monoxide sensor typical application：
1. Residential and commercial; 2. Car alarm; 3. Smart Home; 4. Commercial carbon monoxide test instrument; 5. Industrial carbon monoxide detector; 6. indoor parking lot ventilation control;
7. Portable carbon monoxide concentration meter; 8. CO Detection alarm。
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