The RL4805 and RL4806 are single and dual channel transmitter with flood sensor used for flood and leak detection for 24/7 notification of water ingress. This reliable transmitter is used with our renowned Hanwell Pro temperature humidity monitoring system for 24/7 data and instant alarm notifications. Contact us today for your free quotation and signal strength test (we can prove ours to be unrivalled) or to discuss your specific temperature monitoring requirements and application.