Bosch Alarm Relay Tonfolgeschalter 12V 0332521003

12V Bosch Alarm Relay Tonfolgeschalter # 0332521003 in used condition. I received the relay with the complete fire truck equipment and it was working before it was removed. The relay is stamped with “Bosch 0 332 521 003, 12V, Made in Germany, HO37, B-02, DIN”. An old bracket is mounted on the relay. The relay without bracket is about 14 x 14 x 6 cm. The instruction is a copy and was printed 2005.