Safety Shouldn't Be Complicated
More complexity leads to a higher probability of making a mistake.
Configuration of some detectors requires looking up code numbers to manually set DIP switches or jumpers, or disassembly to access the relays for wiring.
Others require scaling the 4-20mA output signal and calibration with a digital multimeter.
The Foxcroft FX-1500v4 series gives you the simplest installation, setup and use available with any detector.