Conventional Deep Base – 2020DB; 2020B Standard Base – adds 9.5mm to detector height
2020BSD Standard Base with Schottky diode
2020DB Deep Base – adds 21mm to detector height
2020DBSD Deep Base with Schottky diode; 2020PT – Multi-Function Detector
2020P – Optical Smoke Detector
2020R – Rate of Rise Heat Detector
2020F – 58 Celsius Fixed Temperature Heat Detector
2020HF – 70 Celsius Fixed Temperature Heat Detector