1. Use conductive bimetal material to make sure stable currency and the low voltage/current requirement.
2. It can be switch turn on / off gradually in order to maintain a constant & stable temperature.
3. Preset down the temperature range before delivery, can't be adjustable .
4. Terminal end can be connected with lead wire directly.
5. The metal case of switch is electrically conductive it can be encapsulated by insulating sleeve if customer needed.
6. Model VA1 is designed with one terminal whereas model VAA1 is designed with two terminals.
7. Model VAA1(L) is designed to lengthen with plastic covered terminal in order to solve the breakage problem of copper wire.
8. VA1 ( S ) is encapsulated with plastic case for water resistance.
9. Wiring or fuse process are available.