Elsema PCK43304W 4-Channel 433MHz PentaCODE Transmitter with External Inputs

The Elsema PCK43304W is a 4-channel 433MHz PentaCODE® transmitter with hardwired external inputs — a purpose-built bridge between fixed-wired control gear and Elsema's wireless PCR receiver range. Connect a push button, toggle switch, limit switch, relay contact or PLC dry-contact output to one of its four inputs, and the transmitter converts every activation into a secure wireless signal. It's the right part for sites where running cable to a receiver is difficult, disruptive or expensive — retrofitting an existing control panel with wireless gate triggering, linking an alarm panel's relay output to a remote annunciator, taking a PLC output wirelessly to a motor starter on the other side of a yard, or adding wall-mounted wired buttons to a system that's otherwise driven by key fobs. Security is handled by Frequency Hopping Spread Spectrum (FHSS) across five 433MHz frequencies, with PentaCODE® dual coding for setup flexibility: classic 12-way DIP switch for quick pairing, or encrypted mode with over 17 billion combinations for high-security installations. Simultaneous transmission is supported, so closing two inputs at once sends both channels together — no missed triggers on multi-button panels. The PCK43304W runs on 12V AC/DC with a very low 6µA standby current (27 mA when transmitting), which makes battery-powered installations entirely practical. In off-delay mode, a held input triggers short repeating bursts rather than a continuous carrier — keeping the RF channel clear for other devices to operate in the same area. Typical range is up to 500 metres line-of-sight. Compatible with the full Elsema PCR433 series of receivers (1, 2, 4 and 8 channel; 12–24V AC/DC and 110–240V AC supply options). Custom-labelled versions are available on minimum orders of 100 pieces for OEM and installer branding. Key features 4-channel 433MHz PentaCODE® transmitter with hardwired inputs Accepts any voltage-free Normally Open (N/O) contact Frequency Hopping Spread Spectrum (FHSS) across five frequencies Dual coding: encrypted mode or 12-way DIP switch Simultaneous multi-channel transmission Up to 500 m line-of-sight operating range Very low standby current (6µA) — battery-powered installations viable Off-delay burst mode keeps the RF band clear for shared use Compatible with all Elsema PCR433 series receivers Custom-labelled variants available (MOQ 100 pieces) Typical applications Wireless ON/OFF switching via wall-mounted buttons Remote gate triggering where cabling is impractical PLC dry-contact outputs taken wirelessly across a site Alarm panel relay outputs linked to remote indicators Limit-switch signalling from moving machinery Industrial automation retrofits