Very good Abus siren, suitable for alarm systems manufactured by Bosch, We operate the system with the Bosch Amax 2000, which works very well and error free. The SG1800 Abus has a beautiful body, is waterproof and can be mounted in both directions. The circuit opens when an alarm with a negative connection, therefore to operate with other brands as Abus only with switching relay, but this should not be a problem for the experienced Installatuer. Optional with battery 12V 2.1Ah power independently in emergencies.
