Technical Information
|
Sensor
|
Measurement Input Frequency |
2 Hz (2 pulses per second) |
Measurement Range |
0–65,533 pulses per logging interval |
Resolution |
1 pulse |
Lockout Time |
327 ms ±10% |
Recommended Input Type |
Mechanical contact closure (example: reed switch in a tipping-bucket rain gauge) |
Preferred Switch State* |
Normally open |
Edge Detection |
Falling edge, Schmitt Trigger buffer (logic levels: low ≤0.6 V, high ≥2.7 V) |
Minimum Pulse Width |
1 ms |
Input/Output Impedance |
100 KΩ |
Open Circuit Input Voltage |
3.3 V |
Maximum Input Voltage |
3.6 V |
User Connection |
24 AWG wires, 2 leads: white(+), black(-) |
Wireless More
|
Operating Temperature Range |
-25° to 60°C (-13° to 140°F) with rechargeable batteries -40 to 70°C (-40 to 158°F) with lithium batteries |
Radio Power |
12.6 mW (+11 dBm) non-adjustable |
Transmission Range |
Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high |
Wireless Data Standard |
IEEE 802.15.4 |
Radio Operating Frequencies |
RXW-UCD-922: 916–924 MHz |
Modulation Employed |
OQPSK (Offset Quadrature Phase Shift Keying) |
Data Rate |
Up to 250 kbps, non-adjustable |
Duty Cycle |
<1% |
Maximum Number of Motes |
Up to 50 wireless sensors or 336 data channels per one HOBO RX station |
Logging Rate |
1 minute to 18 hours |
Number of Data Channels |
2 |
Battery Type/ Power Source |
Two AA 1.2 V rechargeable NiMH batteries powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40° to 70°C (-40° to 158°F) |
Battery Life |
With NiMH batteries: Typical 3–5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (see Deployment and Mounting), operation outside this range will reduce the battery service life With lithium batteries: 1 year, typical use |
Memory |
16 MB |
Dimensions |
Cable length: 6.5 m (21.3 ft.) Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) |
Weight |
Cable: 250 g (9 oz) Mote: 223 g (7.87 oz) |
Materials |
Mote: PCPBT, silicone rubber seal |
Environmental Rating |
Mote: IP67, NEMA 6 |
Compliance Marks |
See User Manual |