See the Hawk product page and technical specs on our website for full device details
https://www.digitalmatter.com/devices/hawk/
Some FAQ below:
Can the Hawk be used with a solar panel?
Yes, the Hawk is fitted with a 3500mAh back up battery, and charging circuitry. A solar panel can be connected directly to the external power input on the device, and will charge the battery. A 12V panel, 5W min is required. For example https://www.jaycar.com.au/12v-10w-solar-panel-with-clips/p/ZM9051. See Connect a Solar Panel to the Hawk
What is the fastest pulse frequency which can be counted?
Around 50Hz - ensure to test thoroughly higher pulse rates to ensure that none are missed.
How many records can the Hawk store in flash?
The number of records is dependant on what sensors are used. If an SDI-12 probe is used, more space is used per record.
If using an SDI-12 probe, the Hawk can store approximately 40 000 records
Otherwise, it can store approximately 80 000 records - that is nearly 1 year of records taken every 10 minutes!
What is the cable gland clamping range?
To ensure waterproof cable entry into the housing, the diameter of the cable used should be between 2.5mm - 6.5mm. It should also be an extruded cable with 2 or more cores.
The displayed external voltage is 0V, but external power is connected. Why is that?
If the external voltage is below 3V, it is rounded down and displayed as 0V. We have a specified minimum of 6V for the external voltage.
Can I use the onboard Hawk temperature instead of a temperature probe?
No, you should not use the onboard Hawk temperature instead of a temperature probe. This is because the temperature reported in the device logs could be very delayed. The Hawk samples temperature after a task finishes and before an upload. In a heartbeat-only case, the device samples temperature after it logs the heartbeat. For example, if the device heartbeats every 6 hours, the temperature reported in the heartbeat will be 6 hours old.