3
Wired connection
The CORA-HKT can either only be supplied with power using wires (12V), or it can be supplied with
power and transmit data using wires (CORA-DL). Ensure correct polarity of the DL bus.
For either case, the CORA-HKT offers an option to lead wires out of the device‘s casing.
Battery powered operation
The HKT can be powered using 2 AA batteries (not included).
When battery powered, the following is true:
• The HKT cannot be used for relaying wireless signals (HOP).
• Values are updated every 5 minutes.
• Battery lifetime varies based on activity, but typically lasts 3 years.
Initialisation run
As soon as the HKT receives power, it immediately carries out an initialisation run. As such, it should
already be installed when power is supplied. If this was not the case, a restart via button press should
be carried out after installation (see „Button“)
Process of initialisation run:
1. The HKT opens the valve fully.
2. The HKT begins closing the valve until it detects the valve‘s pin through its resistance (this
defines the position of 100%).
3. The HKT goes to position 0% (fully closed).
The surface marked in
red can be broken off to
lead wires through the
gap.
+
12
V
G
ND
D
L
+
+
–
–
