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 the R200 Rack Reader and all other RF Code fixed and mobile readers. This single use, 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 no longer report temperature and humidity.
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
Accurate temperature monitoring within 2°F
Accurate humidity monitoring within 5% RH
Encoded radio transmissions at 433 MHz
Ideal for monitoring rack installed assets and sensitive equipment
Industrial-strength adhesive mounting and flexible mounting options
Works with all standard fixed and mobile readers, including R200 Active RFID Rack Readers and RF Code Mobile Readers
Benefits
Real-time temperature and humidity monitoring for safe protection of racked assets
Enhances customers' existing Active RFID infrastructure
Ideal for high density environments
Operation | |
| Operating Frequency | 433.92 MHz |
| Unique Tag ID Codes | > 500,000 unique IDs |
| Typical Transmission Range | > 30 ft. |
| Modulation | ASK |
| Stability | Saw Stabilized |
Enclosure | |
| 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 | |
| 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 | |
| Battery Type | Lithium CR2032 coin cell |
| Battery Life* | > 3 years** |
* 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. | |
