JBT- 4: Includes 4 stages “heating or cooling”. If wiring the relay contacts accordingly, “heating and cooling” with neutral zone can be realised too. Desired function can be chosen by means of jumpers.

JBT- 6 / - 8: Includes 6 or 8 stages “heating or cooling”. Desired function selectable by means of a switch. LED indicator for mode indication.Sensors are not included in the scope of the delivery. (As for choice of available sensors see as of page133). Application of sensor types according to sensor no. indicated (i.e. all HF, BTF2 or LF types can be used with this number, e.g. HF-3 or LF-23, etc.). Avoid parallel laying of sensor line and mains supply cables or protect it by shielding.