| Model | Cat. # | Description | List Price | Quantity/Status |
|---|---|---|---|---|
| SL31 | 2156.31 | Simple Logger® Model SL 31 (Event) (Discontinued (no replacement) | $0.00 | Discontinued |
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| Channels | One |
| Input | Event |
| Range | Contact closure 0 to 5VDC |
| Accuracy (50/60Hz) | N/A |
| Resolution | N/A |
| Maximum Input Voltage | 10VDC |
| Input Impedance | 800kΩ |
| Sample Rate | Maximum 8 events per second |
| Storage Rate | 1 second |
| Storage Modes | Start/Stop |
| Recording Length | ≥43 days |
| Memory | 4 million measurements (8Mb). Recorded data is stored in non-volitile memory and will be retained even if battery is low or removed. |
| Communication | USB 2.0 (Simple Logger software free to download from web site) |
| Power Source | 2x1.5V AA (LR6) alkaline batteries or USB 5VDC |
| Battery Life | 43 days with new batteries when recording |
| Low Battery | Battery voltage display in software (Batteries need replacement when the LED is dim or does not blink) |
| Dimensions | 3.6 x 1.44 x 1.32” (91.44 x 36.58 x 34.8mm) |
| Weight (with battery) | 3.5oz (99g) |
| Case | Polycarbonate |
| Operating Temperature | 14° to 122°F (-10° to 50°C) |
| Storage Temperature | -4° to 140°F (-20° to 60°C) |
| Relative Humidity | Up to 85% @ 95°F (35°C) |
| Ingress Protection (IP) | IP40 |
| EMC | EN 61326-1 |
| Safety Compliance | IEC 61010-1![]() |























