Forms a receptor complex together with receptor ilcr-2, which upon activation acts as a modulator of neuronal activity. Binding of the ligand ilc-17.1 to the ilcr-1/2 receptor complex triggers a signaling cascade that activates the downsteam signaling components actl-1, pik-1 and nfki-1, and results in increased neuronal activity in RMG interneurons in response to input from oxygen-sensing neurons. This leads to increased animal movement and promotes aggregation behavior. Component of a heterodimeric receptor complex composed of ilcr-1 and ilcr-2. The receptor complex interacts with actl-1 and ilc-17.1 with the interaction being mediated by ilcr-2. Expressed in most neurons.