This is a high-performance replacement remote control battery for the Crestron 81-215-360012, guaranteed to meet or exceed the OEM specifications of your original. The remote control battery is 5.35 x 2.09 x 0.23 inches with an output of 7.4 volts. The chemistry is Li-Ion at 2000mAH capacity. Manufactured by Empire Scientific, model number RLI-015-2. We offer a 1 Year Warranty with purchase. See this product elsewhere at a lower price? Call or email us; we have a Price Match Guarantee.