Grade 3 Double Push panic button with integral EOL resistors (values 1k, 2k2, 4k7, 5k6, 6k8 a 8k2) for use with most control panels or option for Double Pole. Spare terminals allow through connection for multiple units wired to one zone. Special features include integral storage of reset key and anti-lock reset mechanism to ensure unit still operates if reset key is left in the unit and silent operation, white color.