McDonnell & Miller model number 2 is an automatic reset snap switch for model number 63, 47-2, 51-2, 51S-2, 53-2, and 247-2 controls.

McDonnell & Miller model number 2M is a manual reset snap switch for model number 63, 47-2, 51-2, 51S-2, 53-2, and 247-2 controls.

McDonnell & Miller model number 5 is an automatic reset snap switch for model number 93, 193, 94, and 194 controls. This switch features a two pole double break switch for operation at two different levels, multi-function for alarm or valve actuation or low water cut-off.

McDonnell & Miller model number 5M is a manual reset snap switch for model number 93, 193, 94, and 194 controls. This switch features a two pole double break switch for operation at two different levels, multi-function for alarm or valve actuation or low water cut-off.

McDonnell & Miller model number 7B is an automatic reset proportioning switch assembly for model number 93, 193, 94, and 194 controls. This switch features a single pole double break switch for multi-function for alarm or valve actuation or low water cut-off. Proportional signal controls a proportioning valve to maintain a constant water line.

McDonnell & Miller model number 7BM is a manual reset proportioning switch assembly for model number 93, 193, 94, and 194 controls. This switch features a single pole double break switch for multi-function for alarm or valve actuation or low water cut-off. Proportional signal controls a proportioning valve to maintain a constant water line.

McDonnell & Miller model number 7B-1R is a resistor for 7B switches.

McDonnell & Miller model number 11 is an automatic reset snap switch for model number 61, 64, 67, 69, 70, and 764 controls. This switch features a two pole double break switch to provide low water cut-off.

McDonnell & Miller model number 11M is a manual reset snap switch for model number 61, 64, 67, 69, 70, and 764 controls. This switch features a two pole double break switch to provide low water cut-off.

McDonnell & Miller model number 11MV is a millivolt automatic reset snap switch for model number 61, 64, 67, 69, 70, and 764 controls. This switch features a two pole double break switch to provide low water cut-off.

McDonnell & Miller model number 150E-CU is an electronic switch control unit, which mounts onto the flanged probe assembly, for model number 150E and 157E electric controls.

McDonnell & Miller model number FS1-17 is switch for model number FS1, FS1-W, FS4-3D, FS5, FS6, FS8-W and AFE-1 flow switches. This switch is single pole, double throw.

McDonnell & Miller model number FS4-3D-17 is switch for model number FS7-3D flow switches. This switch is single pole, double throw.

McDonnell & Miller model number FS4-33 is switch for model number FS4-3 and FS4-3T flow switches. This switch is single pole, double throw.

McDonnell & Miller model number FS7-31 is switch for model number FS7-4, FS7-4L, FS7-4S, FS7-4E, FS7-4W, AF1, AF2, and AF3 flow switches. This switch is single pole, double throw.

McDonnell & Miller model number SA91-30B is a burner-side switch for number 5 switches on model number 93, 94, 193, and 194 controls.

McDonnell & Miller model number SA91-30P is a pump-side switch for number 5 switches on model number 93, 94, 193, and 194 controls.

McDonnell & Miller model number SWA-42S is a snap switch assembly with automatic reset for series 42 controls.

McDonnell & Miller model number SWA-150S is a snap switch assembly with automatic reset for model number 150S, 150S-B, 157S, 157S-A, 157S-P, 157S-R, and 157S-RL controls.

McDonnell & Miller model number SWA-150S-MD is a snap switch assembly with automatic reset for model number 150S-B-MD, 150S-MD, 157S-MD, 157S-P-MD, 157S-R-MD, 157S-RB-MD, 157S-RB-P-MD, 157S-RD-MD, and 157S-RLS-MD controls.

McDonnell & Miller model number SWA-158S is a snap switch assembly with automatic reset for model number 158S controls.

McDonnell & Miller model number SWA-159S is a snap switch assembly with automatic reset for model number 159S controls.

McDonnell & Miller model number 750B-ENC is an enclosure for model number 750B-DLP switches.

McDonnell & Miller model number 1825042-3-ND is a manual rest switch for model number 750 controls.

McDonnell & Miller snap-action switch assembly with manual reset for 150S and 157S model controls also with manual reset.