**Compatible model**: only works for 310MHZ Linear Delta 3 (DT DTA DTD DTC DNT00002A) Remote 8 Position Dip Switch. **Tested 100,000 Times, FCC Certified**: Reliable and safe with 100,000 tests and FCC certification. **24 Hours Amazon Tech Support & Long Warranty**: Round-the-clock support and extended warranty for peace of mind. **12V 23A Alkaline Long-lasting Battery & Smart Chip**: Extended battery life with advanced low-power chip for superior performance. **310MHZ 8 Dip Switch Fixed Code, 164ft Range**: Enhanced security with fixed code tech and long remote range. **Durable ABS Shell, Easy Pair & Carry**: Tough ABS casing, easy to pair with garage motor, and convenient to carry. 【After-sale Service】We provide 3 YEAR warranty with no condition return or exchange. If you have any query, please contact us through our store homepage "Ask a question" or support email and we will get back to you as soon as possible within 24 hours. **Compatible model**: only works for 310MHZ Linear Delta 3 (DT DTA DTD DTC DNT00002A) Remote 8 Position Dip Switch.