SY1 Equivalent to STA-1, SCY1R, 58A.Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare
SY2 Equivalent to SCY2, 58B.Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare
SY3 Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare
SY4 Equivalent to STA-1D, SCY1, 58D.Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare
SY5 Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare
SY6 Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare
SY7 Equivalent to SCY2R, 58C.Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare
SY8 Fits Security, Brinks, FireKing, First Watch, Honeywell, King, King Star, Kumahira, Saga, Sisco and Star. Compare