Help 4D probe; identify the probe via the ID code; switch the 4D push sign through the  electrical relay for making the 4D probe function normally. four.two.2 Key board The key board might be divided into two parts: entrance-close of the principle board and back-finish of the key board. https://jared35y42.suomiblog.com/a-review-of-dp50rb-login-45289798