Light / Dark Activated Dusk Dawn Sensor Relay SwitchQuasar ElectronicsNew improved version dusk dawn sensor switch with 5 Amp mains rated relay. Light/Dark activation switch. Adjustable trigger sensitivity. LDR and 741 op-amp IC circuitry. Can operate with fast or gradual light change....Electronics > Circuit Components > Printed Circuit Boards > Development Boards3079Bv2KT3079Bv2KT9.95Quasar Electronics Limitedhttps://quasarelectronics.co.uk/Item/3079bv3-light-dark-activated-dusk-dawn-sensor-relay-switch
AS3079BKT - Light / Dark Activated Dusk Dawn Sensor Relay Switch
New improved version with 5 Amp mains rated relay output.
This board uses an LDR and built-in hysteresis of the 741 op-amp IC circuitry to eliminate the problem of relay chatter at the trigger threshold. This allows the switch to operate effectively with both fast and gradual light change (i.e. dawn and dusk).
The Light/Dark mode switch is used to select either light or dark activation of the relay. This enables the unit to be operated in its low-current standby mode for the majority of the time according to your application.
Adjustable light level trigger sensitivity
Switch to select either 'light' or 'dark' activation
LED status indicator
Mains rated relay
Regulated 10 - 15Vdc
Light Activated: <1.5mA standby, <46mA relay active Dark Activated: <2mA standby, <45mA relay active