Hi Lorna,
You can purchase the thermistor for your A10M printer, this is the product link: https://www.geeetech.com/100kohm-ntc-thermistors-for-jietai--
hotend-p-836.html,and the sku is 25-010-0016.
if you need it for specific model printer , pls write a comment for your order , have a nice day.