Stanley circuit board model 921-3528, same as model number 360-3528
Compatible with ALL 1993-1996 garage door openers
Compatible with the following Stanley garage door operator model number: D1000, D2000, GL450, GT200, GT300, GT400, MT310 pace, SB600, SL700, ST100, ST200, ST300, ST400, ST500, TT200, TT300, V1000, V2000, BT200, PT210, PB240, PT300, PL500, PT600, UB210, UB400, UL500, UT200, UT300
310 Mhz frequency, safety sensor compatible
Original manufacturer part, with full 1 year manufacturer warranty