tempi.fi Mini Wireless Temperature and Humidity Sensor - Developed in the USA - 24/7 Data Logger with Alarm – Bluetooth Smart Thermometer and Hygrometer - Monitor Room Freezer Greenhouse Humidor Pet https://www.amazon.com/dp/B07TK22DQQ/ref=cm_sw_r_cp_api_i_8XdwFb8YDDCHD
I’m not familiar with the boveda butler. I got this one from Amazon
Seems this one might work, for you, if nearby at least.