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Product Specifications:
| Item | Data Logger |
| Approx. Transmission Range | 30.5m |
| Battery Life | 2 yrs. Typical (Bluetooth Always On), 5 yrs. Typical (Bluetooth Always Off) |
| Battery Size | AA |
| Battery Type | Lithium, User Replaceable |
| Battery Voltage | 3.6V |
| Bracket Dimension | 10.8cm x 8.3cm |
| Environmental Rating | NEMA 6, IP67 |
| External Sensor Cable Length | 2m |
| Full Memory Download Approx. Time | 60 sec. |
| Gasket Material | Silicone |
| Logger Housing Dimension | 10.8cm x 5.08cm x 2.24cm |
| Logger Operating Range | -40°F to +158°F |
| Logger Weight | 75.5g |
| Logging Modes | Fixed Interval (Normal, Statistics), Burst |
| Logging Rate | 1 sec. to 18 hrs. |
| Material | Acetal |
| Memory Capacity Mx2301a/mx2302a | 128 KB (63488 Measurements) |
| Memory Capacity Mx2303/mx2304/mx2305 | 128 KB (84650 Measurements) |
| Memory Modes | Wrap When Full, Stop When Full |
| No. Of Batteries | 2, 3 |
| Product Datasheet | hobo-mx2302a.pdf |
| Radio Power | 1 mW |
| Rh Accuracy | +/-2.5% (10% rh to 90% rh Typical), +/-3.5% Max at 25°c, Below 10%, Above 90% rh +/-5% Typical |
| Rh Drift | Less Than 1% per yr. Typical |
| Rh Resolution | 0.01% |
| Rh Response Time | 15 sec. to 40 sec. In Air Moving 1 mps Depending On Sensor, Shield |
| Rh Sensor Range Mx2301a/mx2302a | 0% rh to 100% rh, -40°C to +70°C |
| Screw Material | Stainless Steel |
| Solar Radiation Shield Bracket Weight | 20.4g |
| Start Modes | Immediate, Push Button, Date, Time, Next Interval |
| Stop Modes | When Memory Full, Push Button, Date, Time, After A Set Logging Period |
| Temp. Accuracy Mx2303/mx2304 | +/-0.25°C From -40°C to 0°C, +/-0.2°C From 0°C to 70°C, +/-0.25°C From 70°C to 100°C |
| Temp. Drift | Less Than 0.01°C per yr. |
| Temp. Range Mx2301a/mx2305 Internal | -40°C to +70°C |
| Temp. Range Mx2302a External | -40°C to +70°C |
| Temp. Range Mx2303/mx2304 External | -40°C to +100°C |
| Temp. Resolution Mx2301a/mx2302a | 0.02°C |
| Temp. Resolution Mx2303/mx2304/mx2305 | 0.04°C |
| Temp. Response Time External Sensor In Air | 3 min. to 7 min. In Air Moving 1 mps |
| Temp. Response Time External Sensor In Stired Water | 20 sec. |
| Temp. Response Time Internal Sensor | 17 min. |
| Time Accuracy | +/-1 min. per Month (0°C to 50°C) |
| Transmission Range Type | Line Of Sight |
| Wireless Data Standard | Bluetooth Low Energy (Bluetooth Smart) |
Shipping Info:
| Ship weight (kg) | 0.18 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 10.8 |
| Ship width (cm) | 5.08 |
Documentation:
Product Variants
| Product | Model | MPN | Price | |
|---|---|---|---|---|
![]() |
MX2301A | MX2301A | €281.45 |
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HOBO MX2302A External Temperature/RH Sensor Data Logger
€325.74 /unit

