The SD20 unit is the same as the DSCSS30 'bullhorn' type siren. This is you basic siren. Single Tone Unit can be mounted in the cold air return duct, garage, or outdoors. It is not waterproof, but water resistant. This is generally used in conjunction with the larger siren. Max wattage on a 832 panel is 55 watts. If your total wattage is higher then add a relay to switch heavier loads. To mount outdoors, you should use the external cabinet with tampersPricing:
1-6 7+
$C 8.14 8.07
$US 7.90 7.83
EURO 5.29 5.25
