TT-500 vs. TT-400 Comparisons
| Description | TT-400 RV & Truck System | TT-500 RV & Truck System |
| Screen Dimensions (W X H) | 1.25" x 1.88" | 1.56" x 2.25" |
| Monitor Dimensions (W X H X D) | 2.2" x 3.25" x 0.9" | 2.44" x 3.94" x 0.69" |
| Weight | 3.0 oz. | 3.42 oz. |
| Sensor Dimensions (W X H X D) | 0.8" x 0.9" x 0.8" | 0.8" x 0.9" x 0.8" |
| Sensor Weight | 0.5 oz | 0.5 oz |
| Antenna | Standard Antenna | Upgraded, Multi-Directional Antenna |
| Pressure Range | 0-149 PSI | 0-232 PSI |
| Tire Count | 22 Wheel | 22 Wheel |
| Temperature Alert | 167° F | 167° F |
| Pressure Accuracy | +/- 2.7% PSI | +/- 2.7% PSI |
| Temperature Accuracy | +/- 6° F | +/- 6° F |
| Separate On/Off Button | No | Yes |
| Automatic Update Feature | No | Yes |
| Front / Rear Disconnect Mode | No | Yes |
| Automatic Scrolling Feature | No | Yes |
| Updated User Interface | No | Yes |
| Full Delete Reset | No | Yes |
| Program Mode Display | No | Yes |
| 4 Minute Update Cycle | No | Yes |
| Battery Indicator | Only Displays When Low Battery | Continuously Displays Battery Life |
| 433Mhz Wireless Transmitters | Yes | Yes |
| Battery Life | Up to 30 Days (4 Hrs per Day) | Up to 30 Days (4 Hrs per Day) |
| Charger | Proprietary | Micro USB |
| Customer Support - 7 Days per Week | Yes | Yes |
| Warranty | 1 Year | Lifetime |
