Conventional Manual Call Point
Activation of this type of knob is done by breaking the windshield embedded in the knob. After receiving the appropriate impact in accordance with the requirements of National Standard of Iran No. 6174 and International Standard EN 54-11, the knob operates. The environments in which this type of knob can be used are indoor environments. The test key is designed to perform periodic tests and check the function of the thumb, which makes it possible to ensure the correct operation without the need to break the thumb glass.