GSP-2000BK (Black) has been approved to be Fire Rated Certified. You are now allowed to install the black version on your fire rated doors.
Our tips to prolong the life span of your digital lock:
1) Use only ALKALINE batteries
2) Do not use rechargeable batteries or mix new batteries with old batteries
3) Change batteries every 6 months to prevent batteries leakage
4) Install door closer to prevent your door from slamming, otherwise, warranty will be void