... and waterproof ealing strips, is provided with good dustproof and rainproof performance.All the other buttons are with function of automatic ... can be customized.6. Item: .COB61,COB61A, COB62, COB62A, COB63, COB63A, COB64 ,COB64A,COB65Production: Crane push button switch COB Hoist Push Button Switch COB-61