Dual 10A Relay Temp Controller 24V DC

This precision 24V DC digital temperature controller delivers stable thermal regulation across an exceptionally wide range: -50°C to +99°C, with 0.1°C display resolution and ±1°C accuracy between -50°C and 70°C. It uses a single 1.0m NTC sensor and draws only 3W from its 24V DC input. Two fully isolated 10A/220V AC relays provide independent switching for heating and cooling circuits. Unit dimensions: 75 × 34.5 × 85 mm; mounting cutout: 71 × 29 mm. Ambient operating range: 0–60°C; storage: -30–75°C; humidity: 20–85% RH (no condensation). Three operational modes — heat-only, cool-only, and dual auto-switch — are selected via front-panel buttons. Adjustable hysteresis prevents relay chatter. Temperature calibration compensates for sensor position or environmental influence. Refrigeration protection safeguards compressors. Alarm triggers on sensor fault or temperature limit violation. All user settings are retained indefinitely after power removal. Deployed successfully across UK contexts: poultry hatcheries, craft brewery temperature staging, greenhouse propagation units, reptile thermostat upgrades, DIY sous-vide circulators, and HVAC retrofit kits — wherever consistent, safe, and serviceable temperature control is non-negotiable.