Automation Direct SL4824-RR Temperature Controller

The Automation Direct SL4824-RR is a 1/32‑DIN SOLO temperature controller that provides reliable single‑loop temperature regulation with two Form A (SPST) relay outputs rated at 3 A each. It operates from 100–240 VAC and accepts multiple sensor inputs, including current (0–20 mA or 4–20 mA), voltage (0–5 V, 0–10 V, or 0–50 mV), thermocouples (types J, K, T, N, E, R, S, B, L, U, TXK), and RTDs (Pt100 or JPt100). The device uses a two‑line LED display with PV (process variable) readouts shown as two 4‑digit numbers (PV) in 7 mm red digits and SV (setpoint) in 6 mm green digits, enabling clear monitoring at a glance. Its compact 48 × 24 mm front panel footprint (1/32 DIN) makes it suitable for tight panels, with a 100 ms cycle time for responsive control. A key feature of the SL4824‑RR is that Output 2 can be configured to function as Alarm 1, allowing simultaneous temperature control and alert signaling without needing a separate module. The controller is part of AutomationDirect’s SOLO family, known for straightforward setup, simple wiring, and dependable performance in heating and cooling applications. Typical uses include small ovens, heat blocks, plastic extrusion, and general process heating or cooling in compact control panels, where a two‑relay, single‑loop solution provides both primary control and alarm capability without external accessories.