Yes.
On version 2 of the iQ Plus (the current version), child lock is activated and de-activated by holding down the + and – keys for 5 seconds. This locks all keys except the standby button.
On version 1 of the iQ Plus, child lock is activated and de-activated by holding down the – key. This locks all keys on the control pad.
On version 2 of the iQ Plus (the current version), child lock is activated and de-activated by holding down the + and – keys for 5 seconds. This locks all keys except the standby button.
On version 1 of the iQ Plus, child lock is activated and de-activated by holding down the – key. This locks all keys on the control pad.