The FCC ID NHVWB1U523 is unregistered in the FCC.gov system. The first few characters (NHV) indicate this key is manufactured by Tohoku Alps Co Ltd, but the remaining characters (WB1U523) do not match any of their FCC licenses. The key does have a valid Industry Canada filing, indicating an operating frequency of 433.0 MHz – 434.0 MHz.
Canada: 3495 104 709A
ALPS Electric Co., Ltd Japan