| RTR-501 |
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| -40 to 80°C |
| RTR-501L |
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| RTR-501 Extended Battery Life Type |
| RTR-502 |
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| -60 to 155°C |
| RTR-502L |
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| RTR-502 Extended Battery Life Type |
| RTR-503 |
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| 0 to 55°C 10 to 95%RH |
| RTR-503L |
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| RTR-503 Extended Battery Life Type |
| RTR-507 |
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| -30 to 80℃ 0 to 99%RH |
| RTR-507L |
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| RTR-507 Extended Battery Life Type |
| RTR-505-TC |
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| For use with Thermocouple Sensor Types: K, J, T, S |
| RTR-505-TCL |
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| RTR-505-TC Extended Battery Life Type |
| RTR-505-Pt |
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| For use with Pt100/Pt1000 Sensors |
| RTR-505-PtL |
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| RTR-505-Pt Extended Battery Life Type |
| RTR-574 |
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| For Illuminance, UV, Temperature, and Humidity |
| RTR-576 |
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| For CO2, Temperature, and Humidity |
| RTR-51/51A |
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| -40 to 80°C |
| RTR-51L/51AL |
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| RTR-51/51A Extended Battery Life Type |
| RTR-52/52A |
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| -60 to 155°C |
| RTR-52L/52AL |
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| RTR-52/52A Extended Battery Life Type |
| RTR-52Pt |
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| -199.9 to 600°C |
| RTR-52PtL |
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| RTR-52Pt Extended Battery Life Type |
| RTR-53/53A |
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| 0 to 55°C 10 to 95%RH |
| RTR-53L/53AL |
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| RTR-53/53A Extended Battery Life Type |