Velleman HAA54 - Manual (Page 4)

HAA54 GB 4
5. Layout of the PCB
Terminal block
LED2 : is activated upon detection by lower channel
LED1 : is activated upon detection by upper channel
PCB mounting screw
Jumper LED
Heat detector for the upper channel
Heat detector for the lower channel
Adjustment of the vertical angle
Jumper for pulse counter
Tamper switch
LED3 : alarm indicator