The alarm d mini lock is constructed from high quality materials to provide an extremely high level of protection the weatherproof alarm is powered by a long life lithium battery and has an output of 120 db features weatherproof 120 db alarm sold secure gold rated providing the highest level of security 14mm hardened steel shackle pick resistant locking system supplied with 3 keys carry bracket allows lock to be mounted to frame measurements 205mm x 155mm x 14mm