Genuine Bissell power switch fits model numbers: 1685, 1692, 16N5,  Heavy Duty Vacuum 50C9, 5770, 5990, 6100, 6405, 9326, 1698, 1699, 7901, 7920, 8905, 3512-8, 3544 & 9E00 

plus others.

Please call if you're not sure this is the correct switch for your model. 260 244-4696