R155 Humidity-Temperature Tag
RF Code’s R155 Humidity-Temperature Tag monitors and reports the relative humidity and ambient temperature in its immediate environment. It is designed for use in environmentally-sensitive areas, such as IT data centers. Periodically reporting its unique ID along with the sensor data observed by the tag, the R155 is designed for use in combination with RF Code fixed and mobile readers. This affordable sensor tag is mounted in an impact resistant polycarbonate enclosure with strong adhesive on the back of the case. In temperature-controlled settings, such as offices and data centers, the sensor has an accuracy of +/-2°F and +/-5% RH (typical).
The tag is designed for years of reliable performance in an operating range from –4°F to +158°F and 0% to 95% RH. The battery life for the Humidity-Temperature tag will exceed 3.5 years in most deployment environments. The tag operates with a very low duty cycle and a 10-second beacon rate. The R155’s form factor ensures clear signal transmission in high-density deployments. Featuring a low-battery alert, the tag will continue to monitor humidity and temperature for at least three months following this alerting. After that, the tag will continue to broadcast its unique ID and a low battery indication with each beacon, but will not report temperature and humidity until the battery is replaced.
Note: Humidity sensors are not designed for use in harsh chemical environments; prolonged exposure to chemical vapors in high concentrations may diminish the accuracy of the sensor readings.
Features
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Accurate temperature monitoring within 2°F
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Accurate humidity monitoring within 5% RH
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Encoded radio transmissions at 433 MHz
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Ideal for monitoring rack installed assets and sensitive equipment
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Industrial-strength adhesive mounting and flexible mounting options
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Works with all RF Code fixed and mobile readers
Benefits
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Real-time temperature and humidity monitoring for safe protection of racked assets
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Enhances customers' existing Active RFID infrastructure
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Ideal for high density environments
Operation |
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| Operating Frequency |
433.92 MHz |
| Unique Tag ID Codes | > 540,000 unique IDs per Group Code |
| Typical Transmission Range |
> 30 ft. in the data center and up to 300 ft open field |
| Radiated Emissions | 71.8 dBuV/m at 3 meters (maximum) |
| Modulation | ASK |
| Stability | Saw Stabilized |
Enclosure |
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| Width | 2.22 in (56.4 mm) |
| Depth | 1.74 in (44.2 mm) |
| Height | 0.35 in (8.9 mm) |
| Case Weight | 1.2 oz (34.16 g) |
| Construction |
Lexan polycarbonate enclosure with sensor cutout * |
| Durability |
Tough, impact resistant and temperature stable |
| Mounting Options |
3M 200 MP adhesive, zip-tie loop lanyard * |
Environmental |
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| Operating Temperature* |
-20° C to +70° C (-4° F to +158° F) ** |
| Storage Temperature | -40° C to +80° C (-40° F to +176° F) ** |
| Temperature Sensor Accuracy | +/- 2° F (typical) *** |
| Humidity Sensor Accuracy | +/- 5% RH (typical) *** |
Power |
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| Battery Type |
Lithium CR2032 replaceable coin cell |
| Smart Tag Feature | Low battery indication |
| Battery Life* | > 3 years** |
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* Dust, debris, and other contaminants can cause errors in humidity sensor readings. To prevent contamination of the humidity sensor the R155 tag should always be mounted in a vertical orientation. ** Battery life is optimized at >3 years for normal use in temperature-controlled environments between 50° F and 130° F. The R155 will operate properly in the Operating Temperature range, and can withstand periods of time subjected to the Storage Temperature limits without damage. However, long-term exposure to conditions outside of the operating range may decrease the battery life. *** The accuracy of the R155’s temperature and humidity sensor decreases in extreme environments. When exposed to relative humidity levels below 10% and above 90% the accuracy of the humidity sensor may decrease. Extended use in very humid conditions (>80% RH) may temporarily offset the RH signal (up to additional +3% RH after 60 hours). Once the tag is returned to less humid conditions the sensor will gradually return to a normal calibration state. Condensation can cause the sensor to become unreliable. The product is not designed for outdoor use. Exposure to liquids may cause the product to malfunction, or permanently damage the circuitry, and voids the product warranty. |
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