You can bypass the safety temp sensor. Not a good idea but I did it :)
hottop is not a good choice for espresso roasting unless you remove the safety functions and then it can catch on fire if you are not VERY careful.
Mick - "Drinking in life one cup at a time"
"I'd rather be roasting coffee"
Roaster 1: San Franciscan SF-1
Roaster 2: Hottop B-2K+
Roaster 3: Behmor 1600 +
Grinders: Modified Super Jolly - Forte BG (x2)
Pour over: Hario - Bee House - Chemex - Kalita - Bodum
Drip: Bunn CWTF-15-1 commercial
Espresso: Pasquini Livia 90 auto
Vacuum: Cona - Bodum
Press: Frieling - Bodum Colombia