DESCRIPTION
The HD912 series sensors comply with the UL521 and EN 54-5 standards required for fire alarm systems.
HD912-2 ensures a quick and reliable response when the temperature rises to 57 ° C or a sudden rise in temperature of more than 8.3 ° C:

two-wire;
advanced detection and rejection algorithms
easy to install and maintain
low profile housing
reliable sensor head, no need to change.